By comparing reaction times across different tasks, donders was able to conclude how long the mind needs to perform a certain cognitive task. donders interpreted the difference in reaction time between the simple and choice conditions of his experiment as indicating how long it took toa. perceive the stimulus. b. process the stimulus. c. attend to the stimulus. d. make a decision about the stimulus.

D. make a decision about the stimulus.

Explanation:

Cognitive task can be define as the task that requires a person to mentally process the given new information. This process basically involve the acquiring of the information, recalling the information and finally memorizing the information by recalling it.

Reaction time can be define as the amount of the time that the person takes to respond to the stimulus.

Donders is required to make an interpretation depending upon the reaction time which is going to take time as reaction time in the cognitive task typically in making decision according to the stimulus.