500
Solar cookers use sunlight to cook food. An engineer wants to build a solar cooker that will cook faster than those that are currently available. After building the prototype, which step should the engineer perform next?
A. research the features of solar cookers currently on the market
B. collect data on how well the new cooker heats food
C. analyze different ways of solving the problem
D. make a list of materials needed for the new design
B. collect data on how well the new cooker heats food