The correct answer is: A. Counter the loss of biodiversity.
Conservation biology is the scientific study of the nature and causes of biological diversity loss, and the strategies and actions necessary to conserve biological diversity. The primary goal of conservation biology is to counter the loss of biodiversity, which is the variety of life on Earth. Biodiversity is important because it provides us with many benefits, such as food, medicine, and clean water. It also helps to regulate the climate and protect us from natural disasters.
Option B is incorrect because estimating the total
number of species that exist is not the primary goal of conservation biology. However, this information is important for conservationists, as it helps them to understand the scope of the problem and to develop effective conservation strategies.Option C is incorrect because integrating human culture back into nature is not the primary goal of conservation biology. However, this is an important goal for some conservationists, as they believe that humans need to live in harmony with nature in order to protect biodiversity.
Option D is incorrect because cataloguing species is not the primary goal of conservation biology. However, this is an important task for conservationists, as it helps them to identify and track species that are at risk of extinction.