The additional piles which are driven to increase the capacity of supporting loads on vertical piles, are known

Correct Answer: A. Construction piles ✅
Explanation:
Construction piles are the additional piles driven along with existing vertical piles to increase the load-carrying capacity of a pile foundation.
Other Options:
B. Raking piles ❌
Inclined (sloping) piles.
Used to resist horizontal forces such as from bridges, retaining structures, and marine structures.
C. Eccentric piles ❌
Piles where the load does not act through the center of the pile.
Used when loads are eccentric.
D. Sinking piles ❌
Piles installed by driving, pressing, or sinking methods.
Not specifically for increasing capacity of existing vertical piles.