The citizens of a town are aware of climate change, and they want to make changes to control it. one change they consider is replacing the nearby thermal power plant with a hydroelectric plant. if they want to make sure this change will to slow climate change, which question should they ask?

is it less expensive to build a hydroelectric power plant than a thermal power plant?

does a hydroelectric power plant employ fewer people than a thermal power plant?

does a hydroelectric power plant emit less co2 than a thermal power plant?

is the cost of operating a hydroelectric power plant less than the cost of running a thermal power plant?

Which of the following initial observations would more directly lead to this research study? a) ginko biloba is cost effective and also possesses heart-protective, antioxidant, anti-inflammatory properties. b) metformin is an effective treatment of patients with t2d, but shows side effects that complicate the disease state. c) over the past several years, the cost of treating t2d within the united states has increased dramatically. d) many plants contain molecules that improve the health and quality of life of patients with a variety of diseases like t2d. e) t2d affects millions of individuals in the usa and worldwide many of who could benefit from improved therapies.