Answer: The right answer is the B) The art of storytelling.
Explanation: Just to elaborate a little on the answer, it can be added that a noun phrase must, by definition, be formed at least by a noun (plus its modifiers, if it is accompanied by any). None of the other phrases include a noun, but verbs and a conjunction (as soon as). "The art of storytelling" functions as the object of the verb "has been interested." It is formed by a noun, "the art," and a postmodifier, "of storytelling," which is a prepositional phrase.
If feel that it were to be other youtube's and like his mom because he mostly talks about his mom in his videos, and i also think he just wanted to follow his dreams and listen to his heart, which later became a great influence because he just came out with a book, and has a tour, and is very popular on youtube now.