Vishal had got an indication from his friend about the changes in the export market.

feeling
hint
guess
signal

The correct answer is: D. signal

A signal is a sign or indication that something is happening or will happen. In this case, Vishal’s friend gave him a signal that there were changes in the export market.

A feeling is a subjective emotional experience. It is not something that can be easily communicated to others.

A hint is a suggestion or piece of information that gives an idea of what someone is thinking or planning. It is not as direct as a signal.

A guess is an attempt to find the answer to something without knowing for sure. It is not as reliable as a signal.