Explanation:

Reluctant means unwilling and hesitant; disinclined. Enthusiastic means a person who is very interested in a particular activity or subject. Hence, they both are antonyms of each other. Therefore, option (e) is the most suitable answer choice. Hostile means showing or feeling opposition or dislike; unfriendly Hesitant means tentative, unsure, or slow in acting or speaking. Cautious means (of a person) careful to avoid potential problems or dangers Adverse means preventing success or development; harmful; unfavourable.