Read the following sentence:

my ultimate goal as a swimmer is to compete at the national level.

which of the following correctly describes the verbal and its function in this sentence?
swimmer is a gerund describing the goal
swimmer is a gerund describing the speaker
to compete is an adjectival infinitive
to compete is a nominal infinitive

To compete is a nominal infinitive

Explanation:

In the sentence of the question, to compete is a nominal infinitive and acts as noun. Nominal infinitive phrases can be the subject of a sentence, the direct object, or the object of a preposition; and they has the form: to-infinitive

b. the colonies must seek protection from other nations.

if its apex this should be the correct answer

war information to be released publicly must first be deemed useless to the enemy