Which classification includes cash, marketable securities, accounts receivable, and notes receivable?

The classification that includes cash, marketable securities, accounts receivable, and notes receivable is referred to as current assets. Current assets are all assets that are expected to be converted to cash or used up within one year or within the company's operating cycle, whichever is longer.

Cash and marketable securities are typically very liquid and can be quickly accessed. Accounts receivable represents money owed to the company for goods or services provided, which is expected to be collected in the short term. Notes receivable are formalized agreements to receive cash in the future, also generally within a year. All of these are essential for covering short-term liabilities and ensuring liquidity, thus being classified as current assets rather than quick assets, fixed assets, or intangible assets.