Thirty students in a science class each perform the same experiment that involves measuring the temperature of a solution. Which will provide the most valid inference about the temperature of the solution?
averaging the temperatures measured by the six students with the highest scores on the last science test
averaging the temperatures measured by five students who always work together as a lab team
с
averaging the temperatures measured by five class members whose names were picked from a stack of shuffled cards
D
averaging the temperatures measured by the first six class members who enter the classroom the day after the experiment