The correct answer is D, absorption of water. Both plants and animals absorb water from their environment for various physiological processes. Transpiration, on the other hand, is specifically a process in plants where water is absorbed by the roots and then transpired or released as vapor through the leaves. Photosynthesis is the process in plants where sunlight is converted into energy, and cellular respiration is the process in both plants and animals where energy is released from organic compounds.
