I Believe It is C. A Self-Assessment
Im thinking simple carbohydrates.
Question 1: D
Question 2: D
Question 3: A (
Get more sleep to improve your immune system)
Note: you didn't completely finish this question so I answered it the best way as I recall it from a previous answer.
1: true
2: true
3: False
4: True
5: check- call- care
OK so basically the location of the sinoatrial node will be in the right atrium