The graphs below show the change in temperature and salinity of a region of ocean as a instrument is lowered below the surface. Depth is measured in kilometers below the surface, temperature in degree Celsius, and salinity in parts per thousand. Which prediction is most likely, based on the data?

Answers:
A) In the ocean, as salinity increases, temperature increases.

B) Organisms that require a steady salinity move freely between sea level and -0.4 km.

C) Ocean salinity decreases at depths greater than -1.8 km below the surface.

D) Organisms that require a temperature at 5 degrees C will thrive -0.6 km below the surface.