Identify the underlined phrase in the sentence. Mikayla's homeroom teacher, *Mr. Jones*, is very proud of her.

A. prepositional
B. participal
C. gerund
D. infinitive

D. infinitive

The underlined phrase "Mr. Jones" is a noun phrase, specifically a proper noun. It does not fall into any of the categories mentioned in the options (prepositional, participal, gerund, or infinitive). Therefore, none of the options provided are correct for identifying the underlined phrase.

To identify the underlined phrase in the sentence, we need to look at the structure and function of the phrase.

The underlined phrase in the sentence is "Mr. Jones". This phrase is actually a proper noun, not any of the given options.

A prepositional phrase typically consists of a preposition followed by a noun or pronoun. Example: "in the room", "at the park". However, "Mr. Jones" does not fit this structure.

A participal phrase includes a present or past participle plus any accompanying modifiers or objects. Example: "sleeping peacefully", "written by J.K. Rowling". However, "Mr. Jones" is not formed using participles.

A gerund phrase is a noun phrase that begins with a gerund, which is a verb ending in -ing functioning as a noun. Example: "Skiing is my favorite sport." However, "Mr. Jones" is not formed using a gerund.

An infinitive phrase consists of the word "to" followed by a verb. Example: "to eat", "to run". However, "Mr. Jones" is not an infinitive phrase.

Therefore, the correct answer is that the underlined phrase does not fit into any of the given options. It is a proper noun phrase.