Answer:the last choice
Explanation:as it exactly fit for the question as per reaction
Nucleic acids: Stores and transfers info.
Carbohydrates: Store energy, provide fuel, and build structure in body, main source of energy, structure of plant cell wall.
Lipid: Insulator and stores fat and energy.
Protein: Provide structural support,transport, enzymes, movement, defense.
The temperature would be the independent variable because it is what is being changed or controlled to test the effects.
Blood overall cannot circulate and the oxygen does not get into your brain resulting in your death