Answer:
reduce risk
Explanation:
Since in the question it is mentioned that if the stock is made in Wayne’s investment portfolio that lost the value in the recession period but at the same time he has the CD and the saving account
So this diversification of investment effect is to decreased or reduced the risk. also, the diversification of investment made in different investment schemes is known as the portfolio and the same is to be done by him
Therefore it is a reduce in risk technique