This chart shows how often carpets are cleaned in different types of facilities. How often are ground floors of office buildings normally cleaned? A) 1 - 4 months B) 2 - 6 months C) 2 weeks D) 3 - 6 months

D. 3 - 6 month

Explanation:

As indicated in the table, the environment to be cleaned is "ground floor" (row 10). As the question ask about the normal cleaning schedule for the ground floor, so check the Column 2 for Normal Cleaning Frequency, which shows that "3-6 months". So that, D is the answer - the ground floors of office building normally cleaned from 3 to 6 months.

the answer to this question is unstoppable.