Marjorie drives a school bus. sometimes the kids get rather noisy. she decides to play music the kids like through speakers on the bus, but whenever the kids get too noisy she turns the music off. when they quiet down, she turns the music back on. in this way, she hopes to get the kids to make less noise. marjorie is probably going to measure learning as a change in response.
(a)- intensity
(b)-topography
(c)- chorography
(d)- none of these

Intensity

Explanation:

The intensity of sound is also called acoustic intensity. It is a power that carried by waves of the sound as per unit of the area. The SI unit of the intensity is watt per square meter. It is no the same as a physical quantity. Human beings are so sensitive about the sound pressure that is also related to the intensity. When we see the differences in the audio electronics the differences are called intensity differences but we can not sense the sound intensity, for this, we can have to use the microphone.

true because they can bargain

president reagan was a good presidant and should be presidant if he was still alive

explanation: