Which of the following is NOT one of the possible pleas an accused can enter?

In criminal procedure, the possible pleas an accused can enter typically include "guilty," "not guilty," and "nolo contendere" (no contest). A plea of "guilty" admits to committing the crime, while a "not guilty" plea maintains innocence and requires the prosecution to prove the case beyond a reasonable doubt.

The term "dismissed" refers to the status of a case being dropped or thrown out by the court and not a plea that an accused can enter. Therefore, this is not recognized as a plea in the context of criminal procedure.

The option "pardon" refers to an act of clemency granted by a government official or authority, such as the president or a governor, which absolves a person from the punishment of a crime. A pardon is not a plea entered by the accused in the course of judicial proceedings.

Thus, the focus on the plea structure in criminal cases indicates that "dismissed" is not a valid plea; hence, it is the correct choice for the question.