Final answer:
The correct words to fill in the blanks in the sentence are center and bus. The correct option is B) bus, attractions.
Step-by-step explanation:
The correct words to fill in the blanks in the sentence are: center and bus. So the correct option is B) bus, attractions.
The sentence is saying that Tom works in the center of London and he is a bus driver. These words fit in the context and make sense.
The other options do not fit the context of the sentence. Option A) center, tourists does not make sense because it does not specify what kind of place Tom works in. Option C) travel, sights and option D) tour, sights do not make sense because they do not specify what kind of driver Tom is. Therefore, option B) bus, attractions is the correct choice.