Correct answer:
b. v
Vuelo is a noun that is a word or group of words that is the name of a person, a place, a thing, or activity or a quality or idea. Nouns can be used as the subject or object of a verb. Like English, we can categorize nouns in Spanish as common or proper, count or mass, singular or plural. Unlike English, Spanish nouns are also categorized as either masculine or feminine. This noun means flight and is a trip in an airplane.