Answer :
'is' is a preposition
An adjective is a word that describes a noun, so not that.
A verb is an action word, so not that either.
An adverb modifies an adjective, so that is not it.
An adjective is a word that describes a noun, so not that.
A verb is an action word, so not that either.
An adverb modifies an adjective, so that is not it.