Explanation
A strategic asset allocation strategy is one that involves setting target allocations for various asset classes based on the investor's risk tolerance, time horizon, and investment objectives, and rebalancing the portfolio periodically to maintain the original allocations. This strategy is compatible with a buy-and-hold approach and aims to achieve long-term goals by diversifying across different asset classes and markets. In this case, you are implementing a strategic asset allocation strategy for your client Sierra by assigning 30% of her portfolio to fixed income and 70% to equities, and planning to rebalance her portfolio when the actual allocations deviate significantly from the target allocations.
References: Canadian Investment Funds Course, Unit 7, Section 7.1

Explanation
Retractable preferred shares are a type of preferred stock that lets the issuer force the redemption of the shares at a set price and time. The issuer can pay cash or common shares to the retractable preferred shareholders.
References = Retractable Preferred Shares: What it is, How it Works, Example, What are Retractable Preferred Shares? Definition, And How Does it Work? - CFAJournal, Retractable Preferred Shares | Example | Feature - Accountinguide

Explanation
A labour-sponsored investment fund (LSIF) is a type of mutual fund that invests in small and medium-sized businesses that are not publicly traded. LSIFs are sponsored by labour unions or associations and offer tax credits to investors. However, LSIFs are also very risky and illiquid investments that may not be suitable for investors with a medium risk profile, such as Banji. Therefore, Quinton should not proceed with the purchase of the Prospect Labour-Sponsored Fund because it is not suitable for Banji based on her current KYC.
Therefore, C is the correct answer. References: Labour-Sponsored Investment Funds (LSIFs): Definition and How They Work - Investopedia, Canadian Investment Funds Course (CIFC) | IFSE Institute