Plant cell question in age 12 science test
From a picture like this one cannot actually say whether "part-A" is a mitochondria or chloroplast. That could even be some random vesicles or, to think even crazier, assembling viruses. 

The question is really bad and the kid isn't really incorrect. Mitochondria as a guess is pretty reasonable too. However, the second answer is incorrect. I don't know what the kid wants to imply by "to absorb photosynthesis"; it is unclear to me.