Question

Fill in the blank with relative pronouns:
The policeman __________ we approached for help turned out to be a very knowledgeable person.

• A. who
  
• B. that
• C. which
• D. whom

Answer 1

The correct option is D whom

The policeman is the object of the verb "approached". Since, the object is a person, "whom" is the relative pronoun to be used. Hence, Option D is correct. The rest of the options do not adhere to this rule, hence incorrect.