Questions: to identify a person. Which factor should this analyst consider? The names of individuals should be kept safe. People's addresses are public information. Data provided in consent forms should be kept safe. A person's income is public information.

The answer is: Data provided in consent forms should be kept safe.

Explanation for each option:

1. The names of individuals should be kept safe.
   While names are important for identification, they are not necessarily considered sensitive information on their own. However, in certain contexts, such as in combination with other personal data, they should be protected.

2. People's addresses are public information.
   This statement is not entirely accurate. While some addresses may be publicly available, especially in directories or public records, they are generally considered personal information and should be protected to ensure privacy.

3. Data provided in consent forms should be kept safe.
   This is the correct answer. Consent forms often contain sensitive personal information that individuals have agreed to share under specific conditions. It is crucial to protect this data to maintain privacy and comply with data protection regulations.

4. A person's income is public information.
   This statement is incorrect. A person's income is considered private and sensitive information and is typically protected under privacy laws. It should not be disclosed without the individual's consent.