Final answer:
The largest Stroop effect would occur when the number matches the color name.
Step-by-step explanation:
The Stroop effect is a phenomenon in psychology where the reaction time of a task is longer when the color of a word conflicts with the name of the color. In this case, the largest Stroop effect would be observed when the number that represents the dose of caffeine is the same as the color name. So, the answer would be 100, as it is the only option where the number matches the color name.
The Stroop effect would depend on the conditions of the test, such as the difficulty of the task or how the numbers relate to colors and their names. Without additional information, it is not feasible to determine how these numbers are related to the Stroop effect.