No! External is outside so that would be false. Inside would be internal!
The answer is urine because it is a liquid waste that filters blood.
Answer:
2. it can identify people who have been in contact with an infected person
you chooses right
Answer:rather than email,the therapist should explain about the procedure face to face
Explanation:
so that the patient will understand about the procedure and he/she will not be scared to proceed with the procedure