Final answer:
Freshwater algae are the photosynthetic organisms from the provided options, as they perform photosynthesis to produce their own food utilizing sunlight.
so the correct answer is Option C
Step-by-step explanation:
The photosynthetic organisms among the options provided are C. Freshwater algae. Photosynthesis is the process through which organisms like plants, algae, and certain bacteria synthesize food using sunlight. Fungi and most bacteria, including deeply buried soil bacteria, fungal decomposers, and intestinal bacteria, are typically not capable of photosynthesis and are classified as heterotrophs or decomposers. Algae, on the other hand, are photoautotrophs and perform photosynthesis, making them capable of growing in aquatic environments like lakes and utilizing light to produce their own food.
the correct answer is Option C