Intellectual property is a type of data that consists of ideas, inventions, designs, or other creative works that have commercial value and are protected by law. Employees in the research and development business unit are most likely to use intellectual property data in their day-to-day work activities, as they are involved in creating new products or services for the company.
Intellectual property data needs to be protected from unauthorized use, disclosure, or theft, as it can give the company a competitive advantage in the market. Therefore, these employees receive extensive training to ensure they understand how to best protect this type of data.

EDR (Endpoint Detection and Response) is the most suitable solution among the given options for detecting the presence of a rootkit. EDR solutions continuously monitor and collect data from endpoints, looking for suspicious activities and behavior patterns that might indicate the presence of malware, including rootkits. They also provide tools for investigating and responding to security incidents, making them effective for dealing with sophisticated threats that can evade traditional antivirus solutions.

The first step in responding to a cybersecurity incident, particularly when malware is detected, is to contain the impacted hosts. This action prevents the spread of malware to other parts of the network, limiting the potential damage while further investigation and remediation actions are planned.