The verb in the sentence is, to follow (his father's footsteps). This verb is used as an infinitive. An infinitive is a word in the verb form that functions as a noun, adjective or adverb. Infinitives are generally introduced by the word "to".
He knows that he is the god of the sea and he wants to get to know him better but he can't
Out of the choices given above, the correct answer is an admission card, choice B.
B. he describes his son's rare mathematical background