Topic: Adjective (বিশেষণ),

Best Answer Explained in Below-:

In the sentence "Every man is potential," the word "Every" functions as a determiner that qualifies the noun "man." It specifies and emphasizes that the statement applies to all individuals within the category of 'men.' In English grammar, determiners can take various forms, including articles, demonstratives, and quantifiers, and they often serve an adjectival function by modifying nouns.

In this case, "Every" indicates the inclusiveness of all men, which inherently gives it an adjectival quality. Whereas nouns refer to people, places, or things; pronouns replace nouns; and adverbs modify verbs, adjectives, or other adverbs, "Every" fits neatly into the category of adjectives because it describes the nature of the noun it modifies—man.

Therefore, the correct answer is B) adjective, as "Every" attributes a specific quality to the noun, making it clear that the discussion pertains to all individuals classified as men, showcasing the potential that lies within each one.