The given pair represents an antonym relationship. ‘Eager’ means showing great interest, while ‘Indifferent’ means having no interest or concern.

১. ‘Enthusiastic’ means very interested and ‘halfhearted’ means without much energy or interest, which matches the antonym pattern.
২. ‘Anxious’ and ‘nervous’ are synonyms, so they do not fit the original relationship of the pair.
৩. ‘Devoted’ and ‘dedicated’ are also synonyms, representing high commitment towards something.

অতিরিক্ত তথ্য: Antonym-based analogies require identifying the exact opposite meaning in the options.