Which tool is inserted between a wood door frame and the door on an outward-swinging door to force the latch back and open the door?

The correct choice is a shove knife, which is specifically designed for the purpose of unlocking or opening doors. It is used on outward-swinging doors by sliding it between the door frame and the door itself. The specially shaped end of the shove knife can be manipulated to push the latch back, allowing the door to be opened without the need for a key or excessive force.

This tool is particularly useful in scenarios where quick access is required, such as during emergency situations. Firefighters and emergency responders may use a shove knife to gain entry into a building in order to respond to a fire or assist individuals in distress. The design of the shove knife allows for a quick and effective method of bypassing locks without causing damage to the door or frame.

Other tools listed, while they may have their uses in emergency situations or toolkits, do not serve the same function as effectively as a shove knife for opening outward-swinging doors.