Yes, it's A. Spinach and cabbage are (A) the leaves of plants. Spinach do have flowers but they are not the flowers itself while cabbages don't have flowers. Cabbages and Spinach don't have fruits either.
I believe <span>Erta Ale from Ethiopia, Hekla from Iceland, and Ol Doinyo Lengai from Congo.
Hope this helps!</span>
An analogy that can link with the process of respiration can be a factory. For example, the way that the factory processes raw goods to make manufactured goods is similar to how the respiratory system takes in molecules and breaks it down into energy.
It's called an Epinions.
hope that helped