Question

if sienna is using the gymnasium floor to cool off, which position will lower her skin temperature the quickest? standing sitting flat on her back hands and feet touching the floor

Explanation:

Heat transfer occurs more quickly with greater surface - to - surface contact. Lying flat on her back maximizes the amount of Sienna's body surface area in contact with the cooler gymnasium floor, facilitating faster heat transfer from her body to the floor and thus lowering her skin temperature the quickest compared to the other positions.

Answer:

Flat on her back