Institution: জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় (JKKNIU) Exam: গ ইউনিট || জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় || 2013
Topic: verb (ক্রিয়া), Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The word "successful" is an adjective that describes someone or something that has achieved success. To identify the verb form corresponding to "successful," we need to trace the evolution of the root word "success." The verb form that directly relates to "successful" is "succeed," which means to achieve a desired aim or result.

Looking at the options provided:

- A) "Successive" is an adjective meaning occurring in a sequence or following one after another.
- B) "Succeed" is the action of achieving success, making it the correct verb associated with "successful."
- C) "Succession," also a noun, refers to the order or sequence in which one person or thing follows another.
- D) "Succeess" is likely a typo and does not represent a valid word.

Thus, "succeed" is the only term that embodies the action of attaining success, linking it logically to the adjective "successful." In summary, "succeed" is the verb form directly related to the concept of being successful, making option B the correct answer.