I'd say your answer is,
C. the attraction and bonding of ions with equal opposite charges.
Answer: A. Accumulate keratohyalin granules. B. Cells increase in size, some retain ability to divide. C. Cell membrane thickens. Cells imbedded in lipid matrix. D. Cells within this layer proliferate.
Explanation:
Humans benefit from the domestic dog because they reduce stress, they can prevent depression, and they can improve your health. Dogs benefit from humans because they love the bond they have with their owner.
