the answer is C. thinking about a problem constantly
I would Say C. Because you need meat to build up your Strength
Atrial fibrillations the problem of irregular heartbeats, due to which clots can form inside the veins, and may lead to stroke, and ultimately, heart failure. An anticoagulant is given to such patients, to decrease the chances of occurrence of a heart attack due to blood clot formation.
Probably a) improve your mood. but there isn't really an answer for c because i don't know what c can be. hope that helped tho