The correct answer is A. silent.
A loner is someone who prefers to be alone, while a gregarious person is someone who enjoys being around others. A talkative person enjoys talking, while a silent person is reserved and does not talk much. A greedy person is always wanting more, while a
sociable person is friendly and outgoing.In the given question, the person is described as both a loner and someone who loves argument. This suggests that the person is not comfortable talking to others, but enjoys debating and arguing with them. This is consistent with the definition of a
silent person.The other options are not correct because they do not accurately describe the person in the question. A talkative person would not be described as a loner, and a greedy person would not be described as someone who loves argument. A sociable person would be comfortable talking to others, but the person in the question is not.