Question

Is the underlined phrase an adjective phrase or an adverb phrase?

Few people can look at a puppy without smiling.

A.
adjective phrase

B.
adverb phrase

Answer 1

The correct answer is, B. adverb phrase

Answer 2

As far as I undertood the underlined phrase is puppy, right? In this case, I am pretty sure that the underlined phrase is : Few people can look at a puppy without smiling is B.adverb phrase because, as you can see, it does modify the verb in this instance.
Hope I helped!