Depends on what word is underlined.
<em>Maria </em>is a noun, (<em>will</em>) <em>show </em>is a verb, <em>us </em>is a pronoun, <em>the </em>is a determiner, <em>pictures </em>is a noun, <em>she </em>is a pronoun, <em>took </em>is a verb, <em>while </em>is an adverb, <em>on </em>is a preposition, <em>vacation </em>is a noun.
I would say D because it gives an answer with sequence and follows along with the other points such as
-first
-second
-third
-? (fourth)
-finally
