Question

One of the biggest problems facing underseas exploration is:

lack of interest
underwater pressure
extreme cold temperatures
lack of light on the ocean floor

Answer 1

the first one is obviously not the answer xD
B, C and D are all problems but i think the pressure is the most dangerous one. It can be 1,000 times the pressure experienced at sea level.

Answer 2

so B?

Answer 3

Yes :)

Answer 4

thanks