A phone field that provides the full phone number of the seller, a number field that designates the square footage of the listing, and a picklist field that designates the county of the listing should be used as filter criteria because they are fields that can be used to narrow down the report results based on specific values or ranges. A multi-select picklist field that designates features of the listing and a formula field that calculates a price for the listing should not be used as filter criteria because they are fields that cannot be filtered on in reports. References: https://help.salesforce.com/s/articleView?id=sf.reports_filtering.htm&type=5 https://help.
salesforce.com/s/articleView?id=sf.reports_fields_unavailable.htm&type=5

Two considerations that the administrator should remember about roll-up summary fields are:
* Roll-up types include COUNT, SUM, and AVG. A roll-up type is a function that determines how the data from the child records is aggregated and displayed on the parent record. The available roll-up types are COUNT, which counts the number of child records; SUM, which adds up the values of a numeric field on the child records; AVG, which calculates the average value of a numeric field on the child records; MIN, which displays the lowest value of a field on the child records; and MAX, which displays the highest value of a field on the child records.
* Roll-up summary fields are created on the master side of a master-detail relationship. A master-detail relationship is a type of relationship that links two objects together such that the master object controls certain behaviors of the detail object, such as security and deletion. A roll-up summary field is a type of field that displays a value that is calculated from child records related to a parent record. Roll-up summary fields can only be created on the master object of a master-detail relationship or on a lookup relationship if it is set as required.
The other two options are incorrect because:
* Roll-up summary fields do not prevent the conversion of a master-detail relationship to a lookup. They only prevent it if they reference a formula field that includes another relationship.
* Rollup fields are not calculated prior to save. They are calculated after save and may take some time to update.
References: https://help.salesforce.com/s/articleView?id=sf.customize_rollup_summary_fields.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.relationships_considerations.htm&type=5

Giving the account owner Read access to both the Account and the Quota objects will give access to all Item records. Since Item is a junction object between Account and Quota, users need to have at least Read access to both parent objects to see Item records. If users have access to only one parent object, they will not be able to see Item records related to the other parent object. References: https://help.salesforce.com/s/articleView?
id=sf.relationships_manytomany.htm&type=5

A summary report with a cross-filter is a type of report that allows you to summarize data by grouping rows and columns and applying filters based on related objects and fields. A cross-filter is a filter that lets you include or exclude records in your report based on related objects and their fields. In this case, you can create a summary report that includes a cross-filter to the Account object with a sub-filter for credit card number equal to null. This will show you all B2C accounts that are missing the credit card number, regardless of whether it is encrypted or not. References: https://help.salesforce.com/s/articleView?id=sf.
reports_summary_charts.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.reports_cross_filters.
htm&type=5

Product schedules allow users to track revenue or quantity over time for products in opportunities or orders by creating schedules manually or automatically based on predefined criteria such as start date, end date, frequency etc. However, product schedules have some limitations that administrators should consider before enabling this feature. One of these limitations is that line item schedules are unavailable in Process Builder and Workflow rules; only revenue schedules are available. References: https://help.salesforce.com/s
/articleView?id=sf.products_schedules_def.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.
products_schedules_considerations.htm&type=5