The correct answer is (B).
Rashi is a singular subject, so the verb must also be singular. The verb “take” is conjugated in the simple present tense, which is used to describe actions that happen regularly or repeatedly. In this case, Rashi takes the bus to her office every day.
The other options are incorrect because they are not conjugated in the simple present tense. The verb “took” is conjugated in the simple past tense, which is used to describe actions that happened at a specific time in the past. The verbs “are taking” and “are going to take” are conjugated in the present progressive tense, which is used to describe actions that are happening now or that will happen in the near future.
In conclusion, the correct answer is (B). Rashi takes the bus to her office every day.