Step 1: Understanding the sentence.
The word "gazed" suggests a focused or intense look, which fits well with the word "avidly," indicating a strong desire or intense interest, especially in something valuable, like gold coins.
Step 2: Analyzing the options.
(A) avidly: Correct — "Avidly" fits perfectly as it means with intense interest or eagerness.
(B) admiringly: This is incorrect because "admiringly" implies a sense of admiration, not a greedy or intense look.
(C) thoughtfully: This word doesn't fit with the context of the miser's intense focus on gold coins.
(D) earnestly: While earnestness could be related to focus, "avidly" better conveys the idea of strong desire.
Step 3: Conclusion.
The correct answer is (A) avidly, as it fits the context of the sentence, describing the miser's intense focus on the gold coins.