Answer:
Follows are the solution to this question:
Explanation:
In this case, experts use the quarter's mark for comparing many other notice sizes, because as quarters notice is the persistent strike in 3/4 and 4/4 periods. Several other notices are the whole notice including half point, which are higher than those of the fourth related point, while others are shorter than for the sixteenth and eighth notices.
this device is called the Oscilloscope.
B would be the answer. Have a great day!