Explanation:

- Option 1: Ornithology

- This is the study of birds.

- It includes bird behavior, ecology, and conservation.

- Option 2: Entomology

- This is the correct answer.

- It focuses on insects and their interactions with humans, the environment, and other organisms.

- Option 3: Ethology

- This is the study of animal behavior.

- It involves observation and analysis of animal actions in their natural habitats.

- Option 4: Mycology

- This deals with the study of fungi.

- It includes mold, mushrooms, and yeast.