What is the main advantage of a UITF paying units out?

The primary advantage of a Unit Investment Trust Fund (UITF) paying out units is that it provides regular cash flow to investors. This feature is particularly beneficial for individuals who rely on their investments for income, such as retirees or those seeking a steady stream of funds to cover living expenses. The regular payouts can come from income generated by the underlying assets, allowing investors to have access to liquidity while still maintaining their investment in the fund.

In terms of the other options, maximizing growth potential typically relates to reinvesting dividends and capital gains, which might not align with the need for immediate cash flow. Reducing management fees does not pertain to the payout feature, as management fees are generally based on the assets under management rather than whether or not the UITF pays units out. Lastly, capital preservation is not guaranteed by a UITF paying out units; capital preservation depends on the underlying assets and market conditions rather than the distribution method itself. Thus, the correct answer highlights the benefit of regular income that a UITF can provide to its investors through unit payouts.