A Which data set would prove the relationship between the variables when coolant mass affects temperature duration?, using the measurements, labels, and constraints given in the prompt, and for the particular investigation and evidence presented here, and when the stated controls and comparison conditions are applied, and based on the information available in the passage and display
B Which steps should the team follow to install extra frozen packs filling most of the cooler before additional criteria are set?, for the particular investigation and evidence presented here, and when the stated controls and comparison conditions are applied, and based on the information available in the passage and display, and under the conditions and evidence described in the passage
C How can engineers improve the passive medicine-cooler storage system to maintain safe temperature while preserving storage space for clinic workers transporting temperature-sensitive medicine while meeting the criterion that internal temperature stays between 2°C and 8°C for 24 hours while usable volume remains at least 2 liters under conditions involving phase change, insulation, and heat transfer?
D How can the passive medicine-cooler storage system maintain safe temperature while preserving storage space without deciding how success will be measured?, based on the information available in the passage and display, and under the conditions and evidence described in the passage, and for the specific setup, variables, and limits stated in the item, and when the displayed data and experimental conditions are considered
