Which statement best describes concrete?

• A. A construction material made from cement, sand, aggregates, and water.
• B. A binding construction material used to make cement.
• C. A natural rock used to produce cement.
• D. A construction material made from sand and water only.

Answer: (A)

Concrete is a construction material that combines cement, water, and aggregates, including sand as a fine aggregate and larger stones as coarse aggregate. The cement acts as the binder, and when mixed with water it hydrates to form a solid matrix that holds the aggregates together, giving concrete its strength and durability. This description matches the statement because it accurately reflects the typical components and their roles.

The other descriptions refer to cement or raw materials rather than the finished concrete: one describes the binding material used to make cement (which is describing cement itself, not concrete), another points to a natural rock used to produce cement (raw material for cement, not concrete), and the last mentions sand and water only (missing cement and aggregates needed for concrete).