Answer:
D
Explanation:
A. this is an example of active transport and it uses up energy, not producing
B. this is an example of chloroplasts, and it does not produce energy, it creates photosynthesis
C. Proteins are not produced by mitochondria
D. Mitochondria are the powerhouses of a cell, this answer is correct
I believe that the first and last paragraphs are realism because of their cynical descriptions of harsh things, and the middle two are romanticism because of their embellished/elegant descriptions.