Select the most appropriate option that can substitute the highlighted word in the given sentence.
An intense wish to learn something keeps the nerves active.

Correct option is A

The correct substitution for the highlighted word is ‘powerful’ to make the sentence grammatically and contextually correct.
· ‘Powerful’ means having great strength or intensity (शक्तिशाली). It fits perfectly in this context to emphasize the intensity of the wish.
· As per the sentence, ‘powerful’ is the correct word to describe the strength of the wish.
Meanings of other given options and why they are incorrect:
· Fixed: Something that is set and unchanging (निश्चित). Does not fit contextually.
· Lazy: Unwilling to work or use energy (आलसी). Opposite of the required meaning.
· Half-hearted: Without enthusiasm or effort (अधूरे मन से). Incorrect as it reduces the intensity instead of increasing it.