Hydrologists are closely monitoring the health of a reservoir to determine if it will remain a suitable habitat for a rare species of fish. Which species would make the BEST bioindicator? A) Species A, a migratory bird which stops in the reservoir zone twice a year in great numbers.
B) Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH's and water temperatures.
C) Species C, a microbacterium that records show has lived in the reservoir for at least 70 years and can tolerate only slight variations in pH and dissolved oxygen levels.
D) Species D, a local hawk that lives in the reservoir zone year-round and preys upon some aquatic wildlife from the reservoir as well as many species from areas outside the reservoir zone.​