Best Answer Explained in Below-:

The term "ব্যাতিহার বহুব্রীহি" refers to a specific type of compound noun in Bengali grammar. A "বহুব্রীহি" compound is a phrase where the meaning of the whole is not directly reflected in the individual meanings of its parts. Instead, it represents an idea or a concept that is distinct from the components.

In this case, "কানাকানি" fits well as it exemplifies the characteristics of a বহুব্রীহি compound. "কানা" suggests something related to ears (hearing) while "কানি" means "earless" or refers to something not well-informed. Together, "কানাকানি" evokes an image of whispers and hushed conversations, which aligns with the idea of something being subtly conveyed or hidden, creating a phrase that evokes a distinct meaning relating to secretive or discreet communication.

On the other hand, the other options—"মুখচন্দ্র" (moon-like face), "আশীবিষ" (poison-like blessing), and "সােনামুখাে" (golden-faced)—do not have the same nuanced indirect meaning that "কানাকানি" encapsulates in the context of "ব্যাতিহার বহুব্রীহি." Therefore, "কানাকানি" is the apt choice as it aligns well with the nature of a বহুব্রীহি compound.