What is another name for the "master gland"?
a. hypothalamus
b. pineal gland
c. pituitary gland
d. thymus

The pituitary gland is often referred to as the "master gland" of our bodies due to its hormones that control other parts of the endocrine system. 
So, the correct answer should be c. pituitary gland. 

Answerconsultation report, patient correspondence, and informed consent forms;