Investment a offers a much higher rate of return than investment b. what is the most likely reason for this?

The most likely reason for this situation is because the risk of investment A is greater than the risk of investment B. The risk and the return rate of an investment are highly correlated with each other. The term risk means the probability of investment gains a difference return than the expected return. The greater the risk gives the greater difference whether its higher of lower.

Ithinks it’s a and d