Directions: In this question, a sentence is given with a blank to be filled in with appropriate word(s). Choose the correct alternative out of the four given alternatives.

The hare runs as _________ as the dog.

Explanation for option 1: This is grammatically correct as 'an adverb' always comes between “as........as”. Explanation for option 2: This is incorrect as correct adverb is 'fast'. Explanation for option 3: This does not make any sense in the given context. Explanation for option 4: This does not fit in the given context.