Answer:
Option B, About
gallons
Step-by-step explanation:
As per the general consideration, it is said that nearly
%of water on earth is salty water.
Since salty water is found in ocean we can assume that nearly
% of water of planet earth is found in ocean.
Given,
The total water on planet earth is represented by a drum which consists of
gallons of water.
Thus water (in gallons) in oceans would be equal to
gallons.
Thus, Option B, is correct.