A concerned:careful
B anxious:nervous
C enthusiastic:halfhearted
D devoted:dedicated
Correct Answer: Option C
যিনি Eager (উৎসাহী) নন, তিনি indifferent (উদাসীন)। যিনি enthusiastic (উৎসাহী) নন, তিনি halfhearted (নিরুদ্দম) হন।
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