Correct option is A
The correct synonym of the given word is (a) avoid.
• Given word – Abstain:
Abstain means to restrain oneself from doing or enjoying something, or to keep away deliberately from an action.
(Hindi meaning: परहेज करना / दूर रहना)
Example:
Athletes must abstain from junk food during intense training periods.
• Correct answer word – Avoid:
Avoid means to keep away from or refrain from doing something, expressing the functional essence of abstaining in this context.
(Hindi meaning: बचना / टालना)
Example:
You should try to avoid driving through the heavy city traffic during peak hours.
• Synonyms of Abstain: refrain, avoid, desist, eschew.
• Antonyms of Abstain: indulge, pursue, embrace, partake.
Meanings of all the other given options:
• Indulge – Allow oneself to enjoy the pleasure of something (लिप्त होना / आनंद उठाना)
• Differ – Be unlike or dissimilar, or hold a contrasting opinion (अलग होना / असहमत होना)
• Deny – State that something is not true, or refuse to grant a request (नकारना / मना करना)
So the correct answer is (a)