Select the most appropriate option to substitute the highlighted segment in the given sentence.
The betrayer of the country was at last unmasked.

Correct option is A

The correct substitution of "betrayer" is "traitor."
Explanation:
· "Traitor" refers to a person who betrays their country, cause, or trust. (देशद्रोही, विश्वासघाती)
· Example: The spy was a traitor who leaked confidential information to the enemy.
Meanings of other given options:
· Truant – A student who stays away from school without permission. (विद्यालय से गैर-हाज़िर रहने वाला छात्र)
· Transgressor – Someone who violates a rule or law. (क़ानून तोड़ने वाला व्यक्ति)
· Theist – A person who believes in God. (ईश्वर में विश्वास करने वाला व्यक्ति)
Since "betrayer" refers to someone who is disloyal to their country or people, "traitor" is the most suitable word.
Thus, option (a) "traitor" is the correct answer. ✅