The correct answer is Option B, which shows a FlexCard with a header, a body, and a footer. The header contains the title and the icon of the FlexCard. The body contains a Data table element that displays the records from the parent FlexCard. The footer contains a navigation Action that invokes an OmniScript.
Option A is incorrect because it shows a FlexCard with only a header and a body, and no footer.

The LWC PubSub Message flag in the Set Values action of the parent OmniScript enables the parent OmniScript to send data to the embedded OmniScript using a custom event. If this flag is not set, the data will not be passed to the embedded OmniScript

A Set Values Action in a Value field and a Remote Action in an Additional Output value field can execute a function like CONCAT or DATEDIFF by using the syntax {{function(parameters)}}. For example,
{{CONCAT('Hello', 'World')}} or {{DATEDIFF('2021-01-01', '2021-01-31')}}.

Setting the element to require if true allows the developer to configure a Disclosure element to require user input only if a condition is met. In this case, the condition is that the user already checked a Non-Disclosure Agreement Checkbox. The other options are either incorrect or irrelevant for this requirement.

The Target property in publishing Options determines where the FlexCard will be displayed. Setting it to the Community page will make the FlexCard available in the community