Which of the Following Is Not a Reason Why It

Which of the following is not a reason why it is difficult to elicit strong, intense emotion states during brain imaging studies involving fMRI?

A) Participants have to lie very still in the scanner, which can limit the extent of the emotion response
B) Many repetitions of each type of trial (such as viewing fear-inducing images) are required to get clean data
C) If the emotions elicited in the scanner are too intense, it will be difficult for the researchers to identify specific areas of activity in the brain
D) Experimental methodologies that tend to induce stronger emotions are more difficult in a scanner, such as scripted social interactions