which sentence provides the best conclusion to her paragraph? a. no president would have relished being in the position of leading the united states through the great depression, a period of intense and prolonged suffering. b. roosevelt's grit and tenacity in dealing with personal challenges undoubtedly assisted him in leading the nation through a harrowing and uncertain time. c. another significant challenge roosevelt faced was having to introduce large-scale economic reforms to combat the effects of the great depression. d. roosevelt was so determined to overcome the ravaging effects of polio that he purchased a resort in georgia that was known for its therapeutic waters.