Answer: Option A. "Reabsorption"
Step-by-step explanation:
The movement of fluid material across capillary walls are basically driven by three processes diffusion, reabsorption, and filtration and the process is called capillary exchange.
The diffusion process allows the movement of small molecules such as oxygen and glucose across capillaries, filtration allows the movement of fluid to move from higher pressure area in a capillary bed to lower pressure area in the tissues, and reabsorption allows the movement of fluid from higher pressure in the tissues to lower pressure areas in the capillaries.
Hence, the correct option is A.