Question

A new bridge is being built across the river

Answer 1

Answer:

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. Option A)over is correct as it indicates something above the other. The other options are wrong as under, between, and at indicate below something, separation, and a specific location respectively. These uses don't fit in the given question.

The correct answer is Over.