Institution: জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় (JKKNIU) Exam: খ ইউনিট || জাতীয় কবি কাজী নজরুল ইসলাম বিশ্ববিদ্যালয় || 2013
Topic: Sentence (বাক্য), Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The word "poor" is an adjective that describes a lack of wealth or resources, often linked to financial deprivation or a diminished standard of living. To identify the noun form of "poor," we must consider how the meaning of the word is represented in a noun.

Among the options provided, "poverty" (option D) is the most accurate noun form. "Poverty" specifically refers to the state of being poor and encompasses the conditions and experiences associated with economic hardship. It is widely recognized in social sciences and economics as a significant issue affecting individuals and communities.

While "poorness" (option C) might seem plausible as a derivative noun, it is not commonly used in English and lacks the formal recognition that "poverty" has. "Poority" (option A) and "pority" (option B) are nonsensical constructs and do not exist in standard English vocabulary. Thus, "poverty" stands out as the appropriate noun for the adjective "poor," encapsulating its essence and recognized usage in context.