• Know (verb transitive), (verb intransitive) (past tense knew, past participle known):
- English meaning: To have information in your mind as a result of experience or because you have learned or been told it.
- Bangla meaning: জানা; অবগত হওয়া; কোনো কিছু সম্পর্কে সচেতন/ জ্ঞাত থাকা।

• উল্লিখিত অপশনগুলো,
ক) Knowing (Adjective)
- English meaning: Showing that you know or understand about something that is supposed to be secret
- Bangla meaning: চতুর; জানে-শোনে এমন।

খ) Knowledge (Noun)
- English meaning: The information, understanding and skills that you gain through education or experience
- Bangla meaning: জ্ঞান; অবগতি: অভিজ্ঞতা: জ্ঞানের পরিধি।

• Knowledgeable (Adjective)
- English meaning: Knowledgeable (about something) knowing a lot.
- Bangla meaning: জানাশোনা; অভিজ্ঞ; জ্ঞানসম্পন্ন।

• Known
- Past participle know.

- Oxford, Cambridge বা Merriam-Webster - dictionary এর Entry গুলোতে knowledge শব্দটি সরাসরি Noun হিসেবে অন্তর্ভূক্ত।
- তাই, সঠিক উত্তর - Knowledge.

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