The answer is b discharge
To make it parallel I would say to put it in this format: We can’t go back; to go forward is our only option. This makes the verbs the same.
When people spend their money on fast food they are purchasing food that is unhealty normally. Homemade food or things you make at home, soups, casseroles and salads, baked chicken, will last for a week or two or longer if frozen for a future date. The fast food is expensive, not refillable, and after you eat it, many times you are still hungry. You have made no investment in putting food in the house for future meals for your family. Therefore, more money will be spent to make meals or to purchase moore fast food.
