From the words lettered A to D, choose the word that best completes each of the following sentences. The exposed milk in the container has turned _______

From the words lettered A to D, choose the word that best completes each of the following sentences. 

The exposed milk in the container has turned _______

Answer Details

The correct option to complete the sentence is "sour." In this context, "turned" is used to describe a change in the state or quality of the milk. "Sour" is the most appropriate word to describe the taste and smell of milk that has been exposed to air for a long time. "Putrid" usually describes the smell of decomposing organic matter and is not commonly used to describe the quality of milk. "Mouldy" is used to describe food that has become contaminated with fungi, while "stale" is used to describe food that has lost its freshness or crispness. Therefore, the sentence should read: "The exposed milk in the container has turned sour."