The answer would be:
b. Divided power.
I think it is A. Teenagers are an enjoyable and necessary part of our society.
The answers are construction and mining. Mining and construction both involve things where there's a lot of dust and this can cause respiratory issues because prolonged exposure clogs and ruins your lungs and can cause cancer. Mining and usage of fossil fuels like coal also destroys the air with carbon monoxide which also ruins the atmosphere and harms respiratory organs.
Answer: Meg didn't want Calvin to go on the journey with them. She struggles with trusting people. She also is nervous to go on the adventure because of uncertainty. The children tesser with Mrs Who, Mrs Whatsit, and Mrs Which and begin their journey to find their father.
Explanation: