Question

an ________________________ uses linear (straight line) motion to lift straight up. degree of freedom rotating joints linkages elevator lifting mechanism

Explanation:

An elevator is a device that moves people or goods vertically using linear motion. The other options do not specifically refer to a device that uses linear motion to lift straight up. Degree of freedom is a concept in mechanics, rotating joints involve rotational motion, linkages are systems of connected parts, and a lifting mechanism is a more general term that could involve various types of motion.

Answer:

Elevator