Answer:
b) 16.
Explanation:
It has been given that your email marketing service shuts you down if your spam reports exceed 2%. You are doing a mailing to 800 people.
To find the maximum number of spam reports you can get without being shut down we will find 2% of 800.

Therefore, the maximum number of spam reports you can get without being shut down is 16 and option b is the correct choice.