Correct option is D
Option d is correct.
Eagerly- With keen interest or enthusiasm.
Synonyms- Enthusiastically, Keenly, Ardently, Anxiously, Avidly.
Antonyms- Reluctantly, Indifferently, Apathetically, Carelessly.
Meaning of other words-
• Neatly: in a tidy, orderly, and well-organized manner.
• Plainly: in a simple, straightforward, and easily understandable manner.
• Perfunctorily: in a mechanical or routine manner, without enthusiasm or thoroughness.