I was going to say woman, then noticed you limited the question to one gender by saying 'he.' Also, the female produces eggs, but they are not useful unless when trying to produce offspring. The egg and sperm then forms a fetus. Not all men have the skills to farm and harvest eggs and milk, even though they are capable, just as a woman is. So what is left is C, Shopkeeper. A shopkeeper's job is to provide such things like milk and eggs, of course if we are speaking about a grocery store. And obviously the profession of shopkeeper can be either man or woman.