Correct option is A
The correct antonym of the given word is (a)
Order.
Muddle: a state of confusion or disorder. (Hindi: उलझन / गड़बड़ी)
Example: The papers were in a complete muddle on his desk.
Order: a state where things are arranged neatly or systematically. (Hindi: व्यवस्था)
Example: She likes to keep everything in perfect order.
Synonyms of Muddle: mess, chaos, disarray, confusion.
Antonyms of Muddle: order, organization, system.
Meanings of the other options:
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(b) Expand – To make larger (विस्तार करना)
·
(c) Linger – To stay longer than expected (ठहर जाना)
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(d) Assume – To suppose or take for granted (मान लेना)