The school authorities _____ several measures to improve student safety over the past few months.
Show answer & explanation
Correct answer: C
Explanation
Correct Answer: have introduced
Explanation
• The time expression 'over the past few months' refers to an unfinished period extending from the past right up to the present moment.
• An action that started in the past and connects with the present requires the Present Perfect tense (has/have + V3).
• Since the subject 'The school authorities' is plural, it correctly pairs with 'have introduced'.
Quick Tip: Phrases such as over the past few days/months, in recent years, and so far usually signal the use of the Present Perfect tense.