11. Read this sentence. The amount of water used by Americans can be reduced by turning off faucets when not in
use, decreasing the time spent in showers and running washing machines less frequently.
Which edit should be made to correct the sentence?

A. Insert a comma after Americans.
B. Delete the comma after use.
C. Insert a comma after showers.
D. Insert a comma after machines.

(1) fire extended humans’ geographical boundaries by allowing them to travel into regions that were previously too cold to explore. (2) it also kept predators away, allowing early humans to sleep securely. (3) fire, in fact, has been a significant factor in human development and progress in many ways. (4) other obvious benefits of fire are its uses in cooking and in hunting. (5) probably even more important, however, is that learning to control fire allowed people to change the very rhythm of their lives. (6) before fire, the human daily cycle coincided with the rising and setting of the sun. (7) with fire, though, humans gained time to think and talk about the day’s events and to prepare strategies for coping with tomorrow. the sentence that expresses the main idea is: (type the number of the sentence. then click “go.”)

Explain how advancements in technology have affected the diversity of our news, how we receive it, and how it is portrayed by the media.

Boss: oh no! that’s the phone again! secretary: blank boss: . a. shall i take it? b. will you answer it? c. can you do me a favor? d. may i hang it up?