Final answer:
Aggregate, water, and hydraulic cement are the three ingredients of concrete.
Step-by-step explanation:
Aggregate, water, and hydraulic cement are the three ingredients of concrete. Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement that hardens over time. The aggregate provides strength and stability to the concrete, while water is essential for the chemical reaction that allows the cement to bind with the aggregate and form a solid structure.