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Correct answer: Dogma.

Dogmatic (adjective)
- English Meaning: given to or marked by the forceful expression of strongly held opinions.
- Bangla Meaning: মূল্যহীন বা গোঁড়া মতবাদ প্রকাশ করে এমন।

Dogma (noun)
- English meaning: a fixed, especially religious, belief or set of beliefs that people are expected to accept without any doubts.
- Bangla meaning: অন্ধবিশ্বাস বা গোঁড়া মতবাদ; ধর্মমত।

Other options:
গ) Dogmatically (adverb)
- English meaning: in a way that is very certain because you think that you are right and that everyone else is wrong.
- Bangla meaning: গোঁড়ামি করে।

ঘ) Dogmatize (verb)
- English meaning: to speak or write dogmatically.
- Bangla meaning: প্রমাণ উপস্থাপন না-করে নিশ্চিত মত প্রকাশ করা; যুক্তিতর্ক উপেক্ষা করে নিজের অন্ধবিশ্বাস জাহির করা।

Source:
1. Accessible Dictionary by Bangla Academy.
2. Merriam-Webster Dictionary.
3. Oxford Learner's Dictionaries.