Question

The safety of children _____ by certain advertisements.

• A. is endangered
• B. are endangered
• C. has endangered
• D. have endangered

Answer 1

The correct option is A is endangered

Here, 'is endangered' in simple present tense is correct because it is used to indicate a future event on a designated date as part of a plan. 'Is' is used as the subject is singular, not plural.
'Are endangered' is incorrect because the subject 'safety' is singular, not plural.
'Has/have endangered' in present perfect tense is incorrect because it is used to indicate an action which started in the past and has continued up untill now.