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 answers are a and b.  

when cullen speaks of planting while others reap, and standing "abject and mute," he is speaking about the racial injustices present in american society. as these injustices have changed over time, the american identity  has also shifted. those changes are, in turn, reflected in american literature."

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.