Answer:
D) If the return is risk-free and never deviates from its mean, the variance is one.
Explanation:
In the given case, the following statements are true:
a. In the case when the variance increased so the deviation magnitude from the mean is also increased
2. The variance is the predicted square deviation from the mean
3. And, the two common measures of the risk is the variance and the standard deviation
But when the return is risk less so the variance should be zero not one
Therefore the option d is false
