Correct option is A
Aggregates are classified based on their particle size. An aggregate with a particle size bigger than 4.75 mm but smaller than 75 mm is referred to as
coarse aggregate. Coarse aggregates are typically used in concrete mixes to provide bulk and strength to the structure. They are composed of crushed stone, gravel, or other larger particles.
Explanation of other options:
Silt: Silt particles are much smaller, typically ranging from 0.002 mm to 0.075 mm.
Clay: Clay particles are even finer, generally smaller than 0.002 mm.
Fine aggregate: Fine aggregates have particles smaller than 4.75 mm, typically sand.
Thus, the correct answer is
(a) Coarse aggregate.
