That the Deep Sea Could Not Support Life Was Proven

Multiple Choice

That the deep sea could not support life was proven wrong when:

A) Alvin was able to explore the ocean depths.
B) the observations from the Challenger expedition were reported.
C) organisms were discovered while repairing the transatlantic telegraph cable.
D) the development and use of robotic submersibles began.
E) living organisms were found in the Gulf of Mexico dead zone.