Which of the following strategies is best for mitigating the risk of a concentrated position?

Step by Step Explanation:

Diversification: Spreads investments across multiple securities, industries, or asset classes to reduce exposure to a single security or sector.

Other Options:

Use of Leverage: Increases, not decreases, portfolio risk.

Dollar-Cost Averaging: Reduces timing risk but does not address concentration.

Dividend Reinvestment: Enhances returns but does not mitigate concentration risk.