Answer:
Both structures are the ones to use to produce energy
Step-by-step explanation:
The chloroplast and mitochondrion have 2 membranes, one inner and other outside the cell.
The chloroplast since they are present in plants, they use the energy of the sun and the chlorophyll to start the process of energy production, in a plant there are plenty of them but the number is smaller than the mitochondria.
The mitochondria, present in Eukaryota living things, they are present in hundreds or thousands. Also these organelles produce ATP but the source comes from food, not from the sun like the plants.