Answer: B. Pie Chart
Explanation: Pie Chart is a circular representation which is divided into slices like a ie in order to illsutrate the numerical proportion.
Thus it is given that we are running experiments measuring the various parametres like input, output and waste energy, pie chart is the best example to display the results.
Thermometer scale is the temperature scale and energy level diagram is the diagram between the reaction coordinated and the energy thus thse two would no elp us to make an effective nd illustrated numerical representation.
