Final answer:
The correct answer is option 4) Enable the content.
Step-by-step explanation:
The correct answer is option 4) Enable the content. When Access gives you a security warning about your database, you should not enable the content if you are not sure if the database is safe. Enabling the content could potentially allow a virus or other malicious software to run on your computer.
Options 1) and 2) are recommended actions to take to ensure the database is safe. Running a virus scan on any file before trusting it and storing a known safe database in a trusted location are both steps to protect your computer.
Option 3) is also incorrect because clicking Enable Content without being sure of the database's safety can lead to potential security risks.