The correct answer is: C. Batter pile
A batter pile is a type of pile that is driven at an inclination to resist inclined forces. Batter piles are often used in areas where there is a risk of lateral movement of the soil, such as near rivers or on slopes. They can also be used to resist uplift forces, such as those caused by waves or wind.
Friction piles are piles that are driven into the ground and rely on friction between the pile and the soil to resist loads. They are often used in areas where the soil is dense and cohesive.
Sheet piles are long, thin sheets of steel or concrete that are driven into the ground to form a wall. They are often used to retain soil or to create a barrier against water.
Anchor piles are piles that are driven into the ground and then connected to an anchor system. The anchor system can be used to resist uplift forces or to hold down a structure.