The advantage of a concrete pile over a timber pile, is A. No decay due to termites B. No restriction on length C. Higher bearing capacity D. All the above

The correct answer is D. All the above.

Concrete piles are made of concrete, which is a strong and durable material that is not susceptible to decay from termites or other pests. They can also be made in any length, which makes them ideal for use in deep foundations. Additionally, concrete piles have a higher bearing capacity than timber piles, which means they can support more weight.

Timber piles, on the other hand, are made of wood, which is a less durable material that is susceptible to decay from termites and other pests. They are also limited in length, which can make them difficult to use in deep foundations. Additionally, timber piles have a lower bearing capacity than concrete piles, which means they can support less weight.

As a result of these advantages, concrete piles are often the preferred choice for foundation construction. They are more durable, longer, and stronger than timber piles, which makes them ideal for use in a variety of applications.