Answer: possess unique attributes and are not identical.

**Explanation:** - **Option A** is incorrect because real assets typically trade in illiquid markets, making them less liquid compared to financial assets. - **Option B** is incorrect because real assets often require significant management efforts and costs, such as hiring personnel or external management companies to maintain and utilize them efficiently. - **Option C** is correct because real assets are unique properties, meaning no two assets are identical. This uniqueness is a key distinguishing feature of real assets.

Author: LeetQuiz Editorial Team