Practice question

Answer: B) Calcium and phosphate. For Endocrinology, once you lock onto the key mechanism or definition, Calcium and phosphate is the clear fit. If you restate the concept in your own words, the functional job described in the stem is exactly what Calcium and phosphate does in Endocrinology. So Calcium and phosphate is the clean, accurate selection. If a similar stem appears later, start from the same core fact and you will land on the same kind of answer. In class notes, highlight this same phrase next to the related diagram so the wording and the picture reinforce each other.