Institution: Directorate of Primary Education - DPE Exam: Primary Exam Question Solution 21-06-2019
Topic: Adjective (বিশেষণ), Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The question asks for the adjective form of the noun "heart." While multiple options appear to relate to the heart, it's important to distinguish their meanings and usage in English.

A) "Heart" is a noun, denoting the organ or symbol of emotion, so it cannot serve as an adjective.

B) "Heartful" is not commonly used in contemporary English and often regarded as nonstandard. Although it may imply fullness in heart, it's not widely recognized or used.

C) "Heartening," on the other hand, is a well-accepted adjective derived from the noun "heart." It describes something that provides comfort, encouragement, or is uplifting. For example, an encouraging message or a positive experience can be described as heartening.

D) "Hearty," while also an adjective, typically conveys a sense of warmth, vigor, or abundance, often in reference to hearty meals or hearty laughter. It does not directly relate to the emotional or comforting aspect that corresponds with the noun "heart."

Thus, the best choice in this context is "C) Heartening" as it directly describes something that is encouraging or uplifting, reflecting the emotional essence of "heart."