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Correct answer: Imitative.

Derivative (adjective), (noun)
- English Meaning: a word formed from another word or base : a word formed by derivation.
- Bangla Meaning: অন্য শব্দ, বস্তু, পদার্থ থেকে উৎপন্ন শব্দ, বস্তু, পদার্থ; মৌলিক বা আদি নয় এমন; উৎপন্ন; ব্যুৎপন্ন; ব্যুৎপন্ন শব্দ।

Imitative (adjective)
- English meaning: as in imitation: using or marked by the use of something else as a basis or model.
- Bangla meaning: অনুকরণমূলক; অনুকারাত্মক; অনুকরণপ্রবণ; অনুকরণশীল।

Other options:
ক) Ordinary
- English meaning: as in normal: being of the type that is encountered in the normal course of events
- Bangla meaning: স্বাভাবিক; সাধারণ; গড়পড়তা।

গ) Latent
- English meaning: as in dormant, not being in a state of use, activity, or employment
- Bangla meaning: লুক্কায়িত; গুপ্ত; সুপ্ত; অদৃশ্য; নিহিত।

ঘ) Obstinate
- English meaning: sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
- Bangla meaning: একগুঁয়ে; জেদি।

Source:
1. Merriam-Webster dictionary.
2. Accessible Dictionary.
3. Cambridge Dictionary.