<span>D is the correct answer. It is important for fitness centre staff to be certified so they can provide safe instruction, and friendly and helpful so the customer would like to return.</span>
The correct answer would be D. organs and muscles require more blood under stress
All of those ARE reasons why communicable diseases kill fewer people today except for B. Your answer is B.
People learn to empathize feelings of other people by putting them self’s in the other persons show to try to see what there going through in life. We can improve by starting to not focus only on your self and to start you can help other people around for example a family member.