All algae photosynthesize their own food, as plants do. Algae are also widely distributed in bodies of fresh water and in oceans. Because they are so numerous and because they capture energy from sunlight in the food they make, algae are an important source of food for other organisms. Jacquelyn C. Black, Microbiology: Principles and Explorations
A) Argument; conclusion: They capture energy from sunlight in the food they make
B) Nonargument.
C) Argument; conclusion: All algae photosynthesize their own food, as plants do.
D) Argument; conclusion: They are so numerous
E) Argument; conclusion: Algae are an important source of food for other organisms.

Question

Quizplus · Accepted Answer

The passage presents an argument leading to the conclusion that algae are an important source of food for other organisms, based on their ability to photosynthesize and their abundance in various bodies of water.

All Algae Photosynthesize Their Own Food, as Plants Do