Final answer:
Mycology is the scientific study of fungi, which includes research on their classifications, roles in ecology, genetic makeup, and impact on the environment and human health. Thus, the option D is the correct answer.
Step-by-step explanation:
Mycology is the study of fungi. This biological field includes the detailed exploration and examination of various fungal groups such as Zygomycota, Ascomycota, Basidiomycota, and Microsporidia. It is a diverse science that extends beyond just identifying different species of fungi; it also involves understanding their ecological roles, physiological processes, and their implications for human health. Some specialize in areas such as fungal genomics, biotechnology, and plant pathology. Furthermore, mycologists may work to identify and control fungal infections that impact environments and human health, such as the chestnut blight or white nose syndrome in bats. Therefore, the correct answer to the question is: mycology is the study of D) fungi.