Trades that settle within the period preset by regulators of the particular market are considered...

"Regular way" settlement refers to the standard settlement cycle for securities transactions, which is T+2 for most stocks and bonds. This timeline is set by regulators to ensure orderly processing of trades.

D is correctbecause regular way settlement follows the preset T+2 cycle.

Ais incorrect because cash settlement occurs the same day as the trade.

Bis not a recognized term for settlement types.

Cis incorrect because next-day settlement applies only to specific securities (e.g., Treasury securities).