Zack is an infant in a research study.The researchers have shown Zack a picture of the same toy over and over again,on a computer screen.What can you expect if Zack's response to this procedure is typical

A)  He will habituate to the presentation of the picture and will become distressed. 
B)  He will dishabituate to the presentation of the picture and will become distressed. 
C)  His heart and respiration rates will increase, and he will stop looking at the picture. 
D)  His heart rate and respiration rates will decrease, and he will stop looking at the picture.

If Zack's response is typical, he will habituate to the presentation of the picture, which means that his heart rate and respiration rates will decrease as he becomes less interested in the picture. He may also stop looking at the picture altogether. This is a normal response observed in infants during habituation procedures. Therefore, option D is the best choice. Options A and B are incorrect, as they suggest that Zack will become distressed, which is not typical during habituation. Option C is also incorrect because typically, when infants habituate to a stimulus, their heart and respiration rates decrease rather than increase.