How many peaks would be observed for each of the circled protons in the compounds below?

Question

Quizplus · Accepted Answer

For each of the circled protons:
I: Two peaks are expected due to coupling with the two neighboring protons on the methyl group.
II: Four peaks are expected due to coupling with the two equivalent protons on the adjacent methylene groups.
III: Seven peaks are expected due to coupling with the six equivalent protons on the adjacent aromatic ring.

How Many Peaks Would Be Observed for Each of the Circled