Correct option is A
The correct synonym of the given word is (a)
Random.
Haphazard: means lacking any obvious principle of organization; done in a careless, disorganized, or irregular way. (बिना योजना या क्रम के, अव्यवस्थित)
Example: His clothes were piled up in a haphazard manner all over the room.
Random: means done or chosen without a particular plan or pattern. (बिना योजना के, अनियोजित)
Example: The books were arranged in a random order on the shelf.
Synonyms: unplanned, chaotic, aimless, irregular
Antonyms: systematic, organized, methodical, orderly
Meanings of the other given options:
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(b) Sociable: friendly and enjoys the company of others (मिलनसार)
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(c) Aggressive: ready to attack or confront (आक्रामक)
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(d) Confident: self-assured or having strong belief (आत्मविश्वासी)