Which experimental setup would let a student investigate the connection between kinetic energy and temperature?

placing one drop of food coloring in a cup with 50 mL of water at 10oC; placing two drops of food coloring in a second cup with 100 mL of water at 40oC

placing one drop of food coloring in a cup with 50 mL of water at 10oC; placing two drops of food coloring in a second cup with 50 mL of water at 10oC

placing one drop of food coloring in a cup with 50 mL of water at 10oC; placing one drop of food coloring in a second cup with 100 mL of water at 10oC

placing one drop of food coloring in a cup with 50 mL of water at 10oC; placing one drop of food coloring in a second cup with 50 mL of water at 40oC

The experimental setup that would let a student investigate the connection between kinetic energy and temperature is: placing one drop of food coloring in a cup with 50 mL of water at 10oC; placing one drop of food coloring in a second cup with 50 mL of water at 40oC. This setup allows for the comparison of the kinetic energy (movement) of the food coloring molecules at different temperatures (10oC vs. 40oC).