Explanation
A portfolio with a beta less than 1 would be suitable for Gregory, who is a conservative investor and wants to reduce his exposure to market risk. A beta less than 1 means that the portfolio is less volatile than the market index and tends to dampen its movements. This implies that the portfolio would fall less than the market in a downturn, but also rise less than the market in an upturn. A portfolio with a beta equal to 1 would move in the same direction and magnitude as the market, while a portfolio with a beta greater than 1 would be more volatile than the market and amplify its movements.
References: Canadian Investment Funds Course, Chapter 3: Risk and Return1