Which of the following is considered a characteristic of marketable securities?

Marketable securities are defined by their high liquidity and ease of conversion into cash. This characteristic is fundamental to their nature as they are typically financial instruments that can be sold quickly in the market with minimal price fluctuations. This means that investors can easily access cash from these assets without significant delays or losses, which is a key reason why option B is the correct answer.

The other options do not accurately reflect the primary characteristics of marketable securities. While high return on investment might be seen in certain market conditions, it is not guaranteed and varies greatly across different types of securities. Similarly, marketable securities are actually designed to be easily sold, making the concept of them being difficult to sell inaccurate. Lastly, marketable securities are indeed subject to market risks; their prices can fluctuate based on market conditions, which contradicts the statement about them not being subject to market risks. Therefore, B accurately captures the essential trait of marketable securities being easily convertible to cash.