The correct answer is: C. friendliness
The word “camaraderie” means a feeling of friendship and mutual support among people who share a common interest or work together. In the given sentence, the two people are described as “forgetting their old enmity” and “joining hands with a spirit of camaraderie.” This suggests that they are now friends and are working together in a friendly and supportive way.
The other options are incorrect because they do not accurately describe the relationship between the two people in the sentence. Option A, “animosity,” means a feeling of hatred or hostility. Option B, “love,” is a strong feeling of affection and care. Option D, “trust,” is a feeling of confidence in someone or something. While it is possible that the two people in the sentence also feel these things for each other, the word “camaraderie” is the best word to describe their relationship.