Which of these sentences is correctly written? ОА.
It's difficult to predict the impact of new policys and procedures.
ов.
It's difficult to predict the impact of new policies and procedures.
Oc.
Its difficult predict the impact of new policys and procedures.
OD.
It's difficult predict the Impact :of new policies and procedures.

(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.”)

The first step in making a mental model for a compare-and-contrast text is a. comparing the two things being described. b. finding important details in the text. c. contrasting the two things being described. d. connecting details to what is already known.

How can you avoid the problem of groupthink? a. by choosing a group leader to direct the group b. by composing the team of only like-minded individuals c. by encouraging all members to voice their opinions d. by keeping quiet when you disagree with another group member's opinion