A. usually accompanied by dull pain
Hamstring strains are
accompanied by sudden and severe pain during exercise they may possible
include a snapping or popping feeling.
The intellectuals will find it difficult
The heart itself needs blood and nutrients to work properly and gets its share of blood supply from coronary arteries. Coronary heart diseases are linked to coronary arteries. The diseases of coronary arteries are very dangerous; coronary artery diseases like atherosclerosis may cause heart attack.
D. Germs is the correct answer.