Which of the Following Hypotheses Were the Researchers Testing

Multiple Choice

Which of the following hypotheses were the researchers testing?

A) Discontinuous breathing protects against too much oxygen
B) Discontinuous breathing decreases water loss
C) Discontinuous breathing helps underground insects avoid high levels of carbon dioxide
D) Discontinuous breathing saves energy by not moving the diaphragm
E) Discontinuous breathing is harmful because less oxygen is taken up