Choice B. A ratio can be expressed as a percentage if it represents a part to a whole ratio. In this case, 0.316 can be considered a part of a whole (where the whole is 1).
To convert a decimal representing a part-to-whole ratio into a percentage, you multiply by 100 and add a percent sign.
Therefore, 0.316 expressed as a percentage is:
0.316 * 100 = 31.6%
So, the ratio 0.316 can indeed be expressed as a percentage, which is 31.6%.
