Ashoulder massage is one of the best treatments immediately after pulling a muscle in your shoulder.

that statement is false After you a pulled muscle, there will usually an inflamation that happen within your muscle cell. The best treatment that you should do right after you pulled a muscle is let it to rest a bit then put and ice on it. Massaging it right after you pull it will put you on greater risk on hurting your muscle

Your answer is  d.)relationship between pressure and air volume and led to the understanding of how respiration works