An ambulance is passing the woman shown in the image below. At point A, the ambulance is approaching the woman. At point B, the ambulance has passed the woman and is departing. Answer the questions below using this information. At which point does the pitch sound higher to the woman?

No is the answer to the question

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .