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Correct Answer: গ) Complaining in a whining manner.

• Querulous (adjective):
English meaning: Complaining in a rather petulant or whining manner.
Bengali meaning: নালিশ করার স্বভাববিশিষ্ট; কলহপ্রিয়।

Synonym: Petulant, Complaining, Grumpy, Huffy, Scratchy
Antonym: Happy, Cheerful, Easy-going.

Other forms:
- Querulously (adverb)
- Querulousness (noun)

Other Options:
ক) Cheerful and optimistic (আনন্দিত ও আশাবাদী)
খ) Patient and tolerant in difficult situations (কঠিন পরিস্থিতিতে ধৈর্যশীল ও সহনশীল)
ঘ) Brave and bold in action and decision (সাহসী ও দৃঢ় সিদ্ধান্তগ্রহণকারী)

Example sentence:
1. He became increasingly dissatisfied and querulous in his old age.
2. He became querulous when his demands were not met.
3. She spoke in a querulous voice throughout the meeting.

Source:
1. Cambridge Dictionary.
2. Accessible Dictionary by Bangla Academy.