Bunsen burner, petri dish, pipette, tweazers, etc.

• A. Tools of Science
• B. Observation
• C. Hypothesis
• D. Homeostasis

Answer: (A)

These items are examples of tools used in scientific practice. A Bunsen burner provides heat for experiments, a Petri dish is used to culture and observe samples, a pipette measures and transfers precise liquids, and tweezers handle specimens with control. Together, they show the equipment scientists rely on to perform experiments, manipulate materials, and collect data.

Observation is the act of watching and noting what happens, not the equipment itself. A hypothesis is a testable guess about the relationship between things. Homeostasis describes maintaining internal stability in an organism. Because the list consists of actual lab tools rather than actions or concepts, it fits best with Tools of Science.