You are correct, A is the right answer.
Because there is more water outside of this cell, there will be a net movement of water into the cell - osmosis
The answer to this question would be: The soil
The answer is A- sperm and egg. gametes are reproductive cells in mammals, so sperm and egg would be the correct.
Like transpiration in plants mammal's hypothalamus makes sweat glands functional and mammal's body secretes sweat which on evaporation decreases the body temperature