To monitor the sequence in which blood flows to different regions of the brain,researchers are most likely to make use of a(n)

A) brain lesion.
B) fMRI.
C) electroencephalogram.
D) MRI.

Functional magnetic resonance imaging (fMRI) is a technique used to monitor blood flow in the brain while a person is performing certain tasks or resting. fMRI measures changes in blood oxygenation levels, which indicates the amount of blood flow to different regions of the brain at a given moment. By analyzing these patterns of blood flow, researchers can identify the brain regions associated with specific functions or behaviors. Therefore, fMRI is the best choice for monitoring the sequence in which blood flows to different regions of the brain.