Which of the following orders can be entered in an ODAX contract during continuous trading if the last traded price is 50.6?

The correct choice reflects an understanding of how market orders function within the context of continuous trading. A buy market order allows the trader to purchase a specified quantity of contracts at the best available price in the market. Since the last traded price is 50.6, this order can be executed as long as there is at least one corresponding sell order or quote in the order book, enabling the transaction to take place.

In this scenario, entering a buy market order for 10 contracts would immediately match against the best available sell orders, ensuring a swift execution under the current trading conditions. This provides liquidity and facilitates active trading, crucial aspects of the continuous trading mechanism.

Other options may involve conditions or limitations that could prevent execution. For example, a stop buy order may only execute when the market reaches the stop limit but would not immediately allow for a transaction based solely on the last traded price. Similarly, buy limit orders placed at prices lower than the last traded price may not execute if the market is trading above those levels, reflecting stricter transaction parameters. Understanding these nuances is essential for effectively navigating trading strategies and order placements in a competitive market environment.