Question

Fill in the blank with the most appropriate word.
The teacher explained the principles of nuclear fission ____ the class.

• A. at
• B. about
• C. for
• D. to

Answer 1

Answer: (D)

to

A preposition is a word which comes before a noun or a pronoun and establishes a relationship between the elements of a clause or words.

The correct answer is option D) to as it provides an answer to whom (the class).

'At', 'about' and 'for' cannot be used here as they indicate a location, a piece of information and a purpose respectively.

The teacher explained the principles of nuclear fission to the class.