Final answer:
The sentence contains an infinitive, specifically 'to be', which functions as the predicate of the verb 'decided' and expresses the purpose or intention.
Step-by-step explanation:
The sentence contains an infinitive. An infinitive is a verb form that typically begins with the word 'to' and functions as a noun, adjective, or adverb. In this sentence, the infinitive 'to be' functions as the predicate of the verb 'decided' and expresses the purpose or intention.
Learn more about Parts of Speech