The correct answer is: B. Bleeding
Bleeding is the upward movement of water and admixtures through the concrete mix, resulting in a layer of water on the surface. It is caused by the natural tendency of water to rise to the surface, and can be exacerbated by factors such as high water content, low cement content, and vibration.
Segregation is the separation of the concrete mix into its constituent materials, resulting in a non-uniform concrete. It can be caused by factors such as improper mixing, vibration, or handling.
Bulking is the increase in volume of concrete due to the absorption of water by the aggregates. It is a normal process that occurs during the hydration of cement, and can be controlled by using the correct amount of water and aggregates.
Creep is the slow deformation of concrete under sustained load. It is a time-dependent phenomenon that is caused by the movement of water and ions within the concrete.
I hope this helps!