After how many unsuccessful attempts at obtaining a good blood sample should you seek assistance from your supervisor or the doctor?

A) 1
B) 2
C) 3
D) 4
E) 5

Unsuccessful attempts

Efforts made to achieve a goal that do not result in success.

Blood sample

A blood sample is a small quantity of blood taken from the body, typically used for laboratory testing or analysis.

Supervisor

A person with the authority to oversee and direct the work of others, ensuring tasks are completed effectively and efficiently.