Directions: Choose the part of speech for the given word:

Apostrophe

The correct answer is A. An apostrophe is a noun in grammar - it refers to a punctuation mark (') used to indicate possession or contractions, and also a rhetorical device where a speaker addresses an absent or imaginary person. In the context of parts of speech, the word 'apostrophe' itself is a noun. Verbs indicate actions, adjectives describe nouns, prepositions show relationships, and adverbs modify verbs.