In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.
Careful and thorough enquiry

Options

A. investigation
B. interview
C. examination
D. exploration

Answer

A

Explanation

investigation (N.) : an inquiry into unfamiliar/ questionable activities
interview (N.) : the questioning of a person by a journalist, for a job, for admission in school, college, etc.
examination (N.) : inspection, test, scrutiny
exploration (N.): an examination of something to find out about it