Final answer:
The formula for total risk is Total Risk = Systematic Risk + Unsystematic Risk. The CAPM (Capital Asset Pricing Model) is a formula used to determine the expected return on an investment based on its beta.
Step-by-step explanation:
The formula for total risk is Total Risk = Systematic Risk + Unsystematic Risk. The CAPM (Capital Asset Pricing Model) is a formula used to determine the expected return on an investment based on its beta, which is a measure of systematic risk. Therefore, the correct answer to the question would be b) Capital Asset Pricing Model (CAPM).