Aparticipant in a study of music perception listens to music with electrodes attached to her scalp while data are collected on the activity of her brain.
this technique is called:

a. computed tomography (ct)
b. electroencephalography (eeg)
c. positron-emission tomography (pet)
d. magnetic resonance imaging (mri)

Option  B

Explanation:

Since it involves the activity of her brain, the only experiment that would require such is ELECTROENCEPHALOGRAPHY.

Electroencephalography is a measurement of brain activity with the use of electrodes placed at significant places on the brain to measure and take record of data.

It involves the use of some measure of electrical impulse to pass through some segment of the brain to detect and measure some certain activity of the brain and record them on paper.

The best option to the question is Option B

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.