Which of the following psycho-physiological tools used in advertising pre-testing allows you to observe which part of the ad a person is looking atand hence of greatest interest?

Select one:

a.

Electroencephalography (EEG)

b.

Functional Magnetic Resonance Imaging (fMRI)

c.

Galvanic skin response (GSR)

d.

Facial electromyography (facial EMG)

e.

Eye-tracking (ET)