Correct option is C
Concrete sleepers are considered to have superior
shock-absorbing capacity and
damping properties compared to other types of sleepers. Concrete sleepers are widely used due to their strength, durability, and ability to withstand higher loads. They effectively absorb and distribute the stresses caused by train movement, reducing the wear and tear on the track components. While wooden sleepers have historically been known for their flexibility, concrete sleepers are now preferred for modern railways due to their longer life span, minimal maintenance, and better performance in absorbing and damping vibrations.