Medical problems or at least something wrong with you because there are different problems <span />
A separation is where the couple is still married but aren't together. They could do to couples therapy or surround yourself with people who are in positive realtionships to try to fix it.
Answer:
B) Valves closing
Explanation:
A healthy heart makes a lub-dub sound with each beat. This sound comes from the valves shutting on the blood inside the heart. The first sound (the lub) happens when the mitral and tricuspid valves close.
