What effects does pulling the cord attached to the parachute valve have on Rodriguez's balloon?

Pulling the cord attached to the parachute valve on Rodriguez's balloon releases the parachute, causing it to deploy. This action increases drag, allowing the balloon to slow down its descent and stabilize its fall. As a result, the balloon descends more gently, enhancing safety during landing and preventing a hard impact. Overall, it effectively controls the balloon's descent rate.