• The idiom "Get the jump on" means to gain an advantage over someone by acting before they do.
• It is used when a person or organization takes action ahead of others and thereby secures a favorable position.
• The phrase originated from the idea of making the first move before an opponent has time to react.
• Therefore, Option (b) "Gain an edge by moving first" is the correct meaning of the idiom.

Additional Information

• Option (a) Admit defeat suddenly — Incorrect. It refers to accepting loss, which is unrelated to the idiom.
• Option (b) Gain an edge by moving first — Correct. It means obtaining an advantage through early action.
• Option (c) Turn against one's friends — Incorrect. The idiom does not imply betrayal.
• Option (d) Avoid consequences — Incorrect. It is not related to escaping responsibility.