Anoop decides to measure the rate at which the temperature changes as the altitude increases. what would be an appropriate unit for anoop's purpose? choose 1 choose 1 (choice a) a \dfrac{\text{m}}{\text{pa}} pa m start fraction, start text, m, end text, divided by, start text, p, a, end text, end fraction (choice b) b \dfrac{\text{pa}}{\text{m}} m pa start fraction, start text, p, a, end text, divided by, start text, m, end text, end fraction (choice c) c \dfrac{\text{km}}{^\circ\text{c}} ∘ c km start fraction, start text, k, m, end text, divided by, degrees, start text, c, end text, end fraction (choice d) d \dfrac{^\circ\text{c}}{\text{km}} km ∘ c