Based on the Following Abstract Taken from the Journal Trends

Multiple Choice

based on the following abstract taken from the journal Trends in Neuroscience and Education (citation below) . The authors of the paper examined two different methods of mathematics instruction and used brain-imaging techniques to demonstrate how the methods might influence learning. Instructors are advised to use the reference below to retrieve the original abstract for their use.
Wirebring, L. K., Lithner, J., Jonsson, B. , Liljekvist, Y., Norqvist, M., & Nyberg, L. (2015) . Learning mathematics without a suggested solution method: Durable effects on performance and brain activity. Trends in Neuroscience and Education, 4(1) , 6-14.
-The researchers would like to test that the fronto-parietal region in the brain plays an essential role for solving mathematics problems by randomly assigning participants to receive a procedure that causes a small group of neurons to fire in a particular region in the brain. Which procedure are they using?

A) CT
B) PET
C) EEG
D) TMS