Select the most appropriate option that can substitute the highlighted segment in the given sentence.
Natwar was a fraudster who always tried to fooling others.

Correct option is B

The most appropriate option that can substitute the highlighted segment in the given sentence is (b) "deceive."
The corrected sentence would be: "Natwar was a fraudster who always tried to deceive others."
In this context, "deceive" means to trick or mislead others in a dishonest manner.
Meanings of the other options:
 Betraying: Revealing secrets or being disloyal to someone's trust.
 Cheating: Engaging in dishonest or unfair practices to gain an advantage.
 Revealing: Making something known or visible; disclosing information or secrets.