The correct answer to this question is Chloroplast. They are not found in animal cells, but they are found in plant cells. The purpose of chloroplasts is to capture light energy, which is used to make sugar. Other functions of the chloroplast include transforming into chromoplasts. This is the reason why fruits change to different colors once they are ripe.
They have their own DNA, and they have the ability to create building blocks of their own. Another aspect of chloroplasts that is important is their proteins. The proteins have their own encoding, which includes their DNA. The other 90% of the proteins come from the cell.