The conservation movement started in the late nineteenth century due to concerns about the effects of the __________

Which of the following is a provision of the Affordable Care Act?

a. Insurance companies can only stop covering someone during the January open-enrollment period. b. Young people must be allowed to remain on their parents' insurance until the age of 26 c. All caps for out-of-pocket expenses must be eliminated by 2019 d. Doctors can charge patients no more than $10 for preventive care like mammograms, flu shots, and diabetes tests.

What is the most salient barrier to regulating the amount of money spent in political campaigns?

What will be an ideal response?