The reason ______ he did that was unacceptable.

A．Eat one’s meals at regular intervals.
B．Eat raw or cooked food, but not canned or frozen food.
C．Eat a variety of necessary foods.
D．Eat vegetables and fruits more than meat and cereal.

A．How to provide enough food for the ever-increasing population and teach them how to eat food properly
B．How to persuade people of the world to change to healthy diet and not to waste food.
C．How to find ways to feed the world population and to make sure that they have the right kinds of food to eat.
D．How to convince governments of all the countries the importance of developing agriculture and providing their people with enough food.