What is most misleading about the contour map shown below?

the contour interval is too large to see much detail in the landscape.

the contour interval is too small, making the map hard to read.

the contour interval is inconsistent.

there is nothing wrong with the map.

And a) oxygen i believe

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 .