A. A verb form that acts as a noun, adjective, or adverb
B. A sentence fragment
C. A type of conjunction
D. A noun clause
Answer: A verb form that acts as a noun, adjective, or adverb
What is an infinitive?
Additional Information: Infinitives are often preceded by 'to' (e.g., to run, to eat).
Subjects: Sentence Structure, Grammar