An orange juice flowing at 0.80 kg s' enters a counter current double pipe heat exchanger at 20 °C and leaves at 72 °C.
This outcome reflects core biological organization, where structure-function relationships govern cellular processes. Option NAT captures this correctly because it integrates fundamental life science principles, consistent with textbook descriptions and experimental observations in general biology.
Ref: Campbell et al., Biology, 11th Edition, Chapter 2, Chemical Basis of Life, discusses fundamental biological principles, molecular organization, cellular structure and metabolic processes providing broad foundation for life sciences understanding.