C is the answer. proteins are what make up enzyme and enable reactions as well as inhibit them. the other three answers would be the other main structures (carbohydrates, lipids, and nucleic acid)
I think it’s the cell wall
The elevation of the mountain is most likely 871 meters. To find this, find out the increments. There are 5 lines between 750 and 500, 750-500 = 250. Now find out the increments, 50 x 5 = 250. Each increment is 50 meters. There are two increments above 750 so it will be above 850+ meters.
