Bob Davison describes the Endangered Species Act (ESA) as an effective tool for conserving biological diversity. What is his rationale for the value of focusing on individual species?A) A focus on individual species is cheaper than protecting entire ecosystems. B) Establishing public empathy for charismatic species provides an opportunity to educate people about lesser-known species. C) The public is not concerned about the economic costs of individual species recovery. D) The public tends to value intact ecosystems over particular plant and animal species.