Which of the following is a primary component of concrete?

Concrete is primarily composed of three main ingredients: cement, water, and aggregate. Aggregate is crucial as it makes up a significant portion of concrete by volume, typically ranging from 60% to 75%. It can contain a mix of sand, gravel, crushed stone, or other materials, which serve to provide strength and bulk to the concrete mix.

Cement acts as a binder when mixed with water and aggregate, allowing the components to harden and achieve strength as it cures. While asphalt is a material used in paving, it is not a component of concrete. Similarly, fiberglass can be used in some specialized construction applications, but it is not a primary component of traditional concrete. Granite, while it can serve as a type of aggregate, is too specific to be considered a primary component of concrete as a whole, which encompasses a broader mix of materials.