C the pupil its actually a muscle which is pretty interesting i think
The answer is services. The other three are all factors of production. You need land or a place to create your goods and services. You have to have capital to run your production and sustain it. Then you need labor or people who will produce the goods and services that you are going to sell.
First through ur mouth then to ur esophagus which goes to the stomach to the intestines and out, I think, sorry if I'm wrong
