Practice question

Correct option is C, Two benzene rings. In Endocrinology, the accurate description is Two benzene rings, 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 Two benzene rings does in Endocrinology. Then Two benzene rings 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 Two benzene rings. Remember that physiology questions reward precise language: name the process, the location, and the outcome, then match that to the option text.