The correct answer is C. Taxonomy.
Taxonomy is the science of identifying and naming organisms. It is a branch of biology that deals with the classification of organisms into groups based on their shared characteristics. The goal of taxonomy is to create a system of classification that reflects the evolutionary relationships between organisms.
Exobiology is the study of life beyond Earth. It is a relatively new field of science that is concerned with the possibility of life on other planets and moons. Exobiologists study the conditions that are necessary for life to exist, and they search for evidence of life in other parts of the universe.
Ecology is the study of the relationships between organisms and their environment. It is a broad field of science that encompasses the study of ecosystems, communities, populations, and individuals. Ecologists study how organisms interact with each other and with their environment, and they investigate the effects of human activity on the environment.
Toxicology is the study of the harmful effects of chemicals on living organisms. It is a multidisciplinary field that draws on chemistry, biology, medicine, and pharmacology. Toxicologists study the mechanisms by which chemicals cause harm, and they develop strategies to prevent or treat chemical poisoning.