I think the correct answer would be A. The infinitive is the most versatile verb form because it can be used as a verb, noun, adjective and even an adverb. An infinitive verb is classified as a non-finite verb wherein it could be used as the principal verb in a sentence. The infinitive verb form of a verb is commonly preceded by the word "to". For instance: to run, to dance, to swim, to sleep etc. An example of an infinitive verb as a noun is: To swim a mile is her greatest dream. The infinitive form of the verb is "to swim"
Answer:
C. Likely to change easily; example
“They were conscious that they were not as other animals.”
“If they worked hard, at least they worked for themselves.”
“All animals were equal.”
