Biology

Step 1: Understanding entomology.
Entomology is the branch of zoology that focuses on the study of insects. It is a specialized field within biology.
Step 2: Analyzing the options.
(A) Behavior of human beings: This is the study of human behavior, not related to entomology.
(B) Insects: Correct — Entomology is specifically concerned with the study of insects.
(C) The origin and history of technical and scientific terms: This refers to etymology, not entomology.
(D) The formation of rocks: This is geology, not entomology.
Step 3: Conclusion.
The correct answer is (B) Insects, as entomology is the science that studies insects.