Question

Are you quite sure? what kind of adverb. ​

Answer 1

$here \: your \: answer$

Quite" is the adverb in the sentence you have given. →An adverb describes an action. One can form adverbs by adding "ly" to the adjectives.

Answer 2

$hope \: it \: will \: help....$

Quite, adverb of degree.