Topic: Antonyms, Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The term "foe" refers to an adversary or enemy, someone who is in opposition or conflict with another person or group. To identify the antonym of "foe," we need to look for a word that conveys the opposite meaning—essentially a term that embodies companionship, support, or goodwill.

Among the options provided—Opponent, Enemy, Friend, and Rival—only "Friend" serves as the direct antonym of "foe." While "Opponent" and "Rival" can imply competition or hostility, they do not inherently denote enmity; they can exist in contexts such as sports or games where the participants may maintain a level of respect and camaraderie. "Enemy," on the other hand, directly aligns with "foe," further reinforcing the notion of conflict.

In contrast, "Friend" signifies a positive, supportive relationship and suggests companionship and loyalty, opposing the fundamental nature of being a foe. Therefore, it is clear that "Friend" is the correct answer, as it stands in stark contrast to the concept of a foe—emphasizing connection and mutual support rather than opposition.