What are two sentences that run independently from each other, although served by the same defendant, called?

The correct answer highlights that when sentences run independently from each other, they can be referred to as consecutive sentences. This means that one sentence starts only after the other has been completed, allowing the defendant to serve both sentences in a sequential manner.

Consecutive sentences are commonly employed in legal systems when a defendant has committed multiple offenses, and the court decides to impose separate penalties for each crime rather than combining them into a single sentence.

By understanding this concept, it clarifies how the penalties apply over time and the total duration of the defendant's time under correctional supervision. The other options do not correctly describe this structure, as simultaneous, alternative, and sequential sentences imply different relationships between the terms of imprisonment.