What field of study involves the examination of insects?

The field of study that involves the examination of insects is entomology. Entomology is a branch of zoology focused specifically on the study of insects, their behavior, life cycles, ecology, and their role in the environment. This discipline is essential in various fields, including forensic science, where entomologists may help estimate time of death in criminal investigations by analyzing the types and life stages of insects found on a decomposing body.

The other options refer to different areas of biological study. Botany focuses on the study of plants, zoology encompasses the study of all animals, and mycology is concerned with the study of fungi. While zoology does include insects as a subset of animal studies, entomology specifically targets them, thus making it the correct answer in this context.