Practice question

Correct option is B, Dopamine. In Endocrinology, the accurate description is Dopamine, and that is what you should commit to memory. Keep the definition tight and the role clear — the functional job described in the stem is exactly what Dopamine does in Endocrinology. Then Dopamine is the answer you can defend. Check yourself by covering the options and writing the answer first, then matching the letter — that builds confidence. If the wording feels dense, translate it into everyday language first, then map that plain sentence back onto Dopamine. Remember that physiology questions reward precise language: name the process, the location, and the outcome, then match that to the option text.