Explanation:

- Quick Assets: These are assets that can be quickly converted into cash. They are vital for assessing a company's short-term financial health.

- Option 1: Cash in hand - This is cash readily available for use. It is definitely part of quick assets.

- Option 2: Prepaid Expenses - These are payments made in advance for services or goods. They are not easily converted to cash. ??

- Option 3: Marketable Securities - These are liquid financial instruments that can be easily sold. They are included in quick assets.

- Option 4: Trade Receivables - Money owed by customers for goods or services delivered. Generally considered quick assets.