Which of the following actions constitutes escape?

The correct answer is based on the definition of escape within legal contexts. Escape typically refers to an individual breaking free from physical custody or confinement, which includes leaving an area or facility where they are being detained without permission or authorization. This could apply to someone who is in jail, in a police station, or under arrest.

In this case, departing from custody without authorization clearly fits this definition. It signifies a willful act to break free from the control or supervision of law enforcement, which constitutes an escape.

The other actions listed do not meet the specific legal criteria for escape. Fleeing a crime scene is an attempt to avoid arrest or legal repercussions, but it does not involve leaving custody. Running from an officer might indicate trying to evade arrest but doesn't imply being in custody at that moment. Evading a summons refers to avoiding a legal order to appear in court, which does not involve actual custody or a physical escape from lawful detention.