What is the function of chordae tendinae? A. hold valve shut when ventricles contract
B. open valve to allow blood from atrium to flow into ventricles

Well, l think that some effective communication is, emotional barriers and lack of attention, interest distraction or irrelevance. also some physical disabilities such as hearing problems or speech difficulties.      l hope i am correct  and you good luck.

Paranoid schizophrenia i believe

Answer the lack of variation in activity can lead to boredom and eventually cause exercise to stop;