Question

Choose the option that fills the blank with the most suitable word:

_____ his best efforts, he was unable to locate the dog.

• A. from
• B. of
• C. after
• D. with

Answer 1

The correct option is C after

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 C)after is correct as it means following in time, order etc. The other options are wrong as from, of, and with indicate a source, possession, and inclusion respectively. These uses don't fit in the given question. The correct answer is C)after.