The correct option is C Mitochondria and plastids
Mitochondria produce the energy currency, i.e., ATP of the cell. Mitochondria take nutrients and convert them into energy molecules. This process is known as 'oxidative phosphorylation'. Mitochondria are called as power house of the cell.
Chloroplast is one of the type of plastids and is involved in carrying out photosynthesis. It converts the light energy to chemical energy, i.e., 6 CO2 + 12 H2O --> C6H12O6 in presence of light.
Both, mitochondria and plastid possess their own genetic material and ribosomes. The mitochondrial DNA and plastid DNA possess genes, which produce the proteins necessary for the functioning of mitochondria and plastids respectively.