Question

Which of these thesis statements is restricted?

Cancer is a deadly disease.
Pets are a welcome addition in most homes.
Social Security is a tricky issue for any president.
Antibacterial products are unnecessary and may contribute to antibiotic resistance.

Answer 1

The correct answer should be Cancer is a deadly disease

This is a clear, concise, and a restricted statement. The second and third one don't really point to anything that you're going to examine or prove. The last one can be convoluted and difficult to examine because they may contribute but they are not unnecessary.