Final answer:
The correct answer to the question is (a) Chloroplasts, where pigments like chlorophyll enable the process of photosynthesis in plants and algae.
Step-by-step explanation:
Plants and algae contain organelles called chloroplasts. Pigments within chloroplasts, such as chlorophyll, enable these organisms to perform photosynthesis. Chloroplasts are specialized organelles found in autotrophic eukaryotes which are essential for capturing light energy that drives the synthesis of organic compounds.
Chloroplasts have a double membrane envelope, with an outer and inner membrane. Within the double membrane, there are structures called thylakoids, which are arranged in stacks known as grana. The chlorophyll pigment is embedded in the thylakoid membranes and plays a critical role in converting light energy into chemical energy during photosynthesis.
In summary, the correct answer to the question is (a) Chloroplasts.