The correct option is C They are capable of manufacturing their own food by photosynthesis like plants
Option C is correct because b, bacteria is a Cyanobacteria, commonly known as Blue_green algae are eubacteria which uses sunlight to synthesis it's food whereas other options are clearly incorrect because they do not prepare their food in the presence of darkness, do not uses other kind of light to do photosynthesis and also do not prepare their food without light.