Context: Below is a food web from a tundra ecosystem in Nunavut, a territory in Northern Canada.
A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matter moves between organisms in an ecosystem.
Which of these organisms contains matter that was once part of the bear sedge?
A. Arctic fox
B. barren-ground caribou
C. bilberry
Choose the right answer from the options and respond with its letter.
Answer: A