Final answer:
To feel the levator scapula contract, you can have your partner lift their arms at the shoulder or move their elbows back like elbowing someone behind.
Step-by-step explanation:
An action that you can ask your partner to perform to feel the levator scapula contract is to lift the arms at the shoulder while keeping the elbows pointed towards the ground. This motion involves elevating the shoulders, which engages the levator scapula, a muscle that is part of the scapular muscles group. Alternatively, another action is to move the elbows back as if elbowing someone behind you or to spread the elbows apart, which also activates the levator scapula as it supports the scapula and the movement of the shoulder.