Question

The snake slithered _________ across the dry creek bed. In the above sentence, the blank must be filled with

A. A CONJUNCTION
B. A NOUN
C. AN ADJECTIVES
D. AN ADVERB
E. NONE OF THESE

Answer 1

D: adverb because this would describe the verb slithering. Hope this helps.

Answer 2

D. An adverb

This is because an adverb describes a verb. In this case the word would be anything describing the *verb* -Slithering-