D. All of the above
(I mostly believe this is the correct answer.)
Most dentist recommend that you rinse your mouth with warm salt water three to four times a day after an extraction. When rinising ensure that there are no particules of food left in the mouth to prevent infection.
Answer: A EKG is painless test used to quickly detect heart problems and monitor your heart's health.
Explanation:
EKG also known as Electrocardiography
But to sum it up An electrocardiogram records the electrical signals in your heart.
B,basic if you want this answer described to you let me know<span />