It's an adjective; "The smallest puppy" is the subject of the sentence as the rest of the sentence describes it. Of course the subject cannot just be "puppy" so it must include "The smallest" as well. Since smallest is an adjective (A word that describes something else,) that answer is Adjective.
Plan is the answer, it helps to replace the word with one of the answer choices.
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Answer:
A.Reflect
Explanation:
Ruminate is past tense
and depending on what kind of reflect you're using the one i'm using your reflecting on something in the past
there are several different meanings for reflect
Answer:
tone (the tone expresses the feeling portrayed by the author it sets the mood)
Explanation: