Well I think the theme is you need to work hard to have fun later. and what makes me believe this is how Tammy worked hard and got to go to the pizza thing and Sammy didn’t work hard and had to work super hard and didn’t get to go to the pizza thing. I hope this helps!
Answer:
A combination of a verb and an adverb or a verb and a preposition, or both, in which the combination has a meaning different from the meaning of the words considered separately : "Catch on " is a phrasal verb meaning of understand.
It's b. A bus that operates inside one city
