What would be the best concluding sentence for this passage? A. Thus, kids should never leave a backpack unattended at school or other common areas.
B. Lastly, broken backpack straps are often the cause of back pain or injury.
C. In conclusion, older students do not need to worry about problems caused by backpacks.
D. To sum up, choosing the right backpack can help prevent future injuries.

What is the most important lesson wiley learns in "wiley, his mother, and the hairy man"?

(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.”)

What is the narrators main conflict in this passage