Concept:Entomology is the branch of zoology that deals with the scientific study of insects.
Explanation:Insects are the most diverse group of animals on Earth.
Entomology covers their life cycle, behaviour, classification, and impact on humans.
It is essential for agriculture, medicine, and ecology.
The other given branches study different organisms.
Mycology is the study of fungi.
Philology is the study of language and literary texts.
Phycology (or algology) is the study of algae.
Only Entomology matches the study of insects.
Answer:A. Entomology