Explanation
An exchange-traded fund (ETF) is a type of pooled investment security that operates much like a mutual fund.
Typically, ETFs will track a particular index, sector, commodity, or other assets, but unlike mutual funds, ETFs can be purchased or sold on a stock exchange the same way that a regular stock can. ETFs have lower management expense ratios (MERs) compared to mutual funds because they are passively managed and do not incur high costs for research, analysis, and portfolio rebalancing. Therefore, this statement is true about ETFs.
References: Exchange-Traded Fund (ETF) Explanation With Pros and Cons - Investopedia, The Best ETFs - Exchange Traded Funds Rankings | US News Investing