Which of the following is a primary focus of microbiology?

The primary focus of microbiology is the study of microscopic organisms, including bacteria, viruses, fungi, and protozoa. This field is dedicated to understanding the biology, ecology, and genetics of these tiny life forms, which play crucial roles in a wide range of processes, from human health and disease to environmental sustainability and biotechnology.

Microbiology encompasses various sub-disciplines such as bacteriology (the study of bacteria), virology (the study of viruses), mycology (the study of fungi), and parasitology (the study of parasites). By focusing on these microscopic entities, microbiologists investigate their structure, function, interactions, and impact on other living organisms and ecosystems.

In contrast, the other options do not align with the core objectives of microbiology. The study of large organisms, human anatomy, and animal behavior covers different areas of biological science, such as zoology and anatomy, and whereas they may occasionally overlap with microbial studies, they do not form the foundation of microbiological research.