Final answer:
The classic triad of pre-eclampsia consists of hypertension, proteinuria, and edema.
Step-by-step explanation:
The classic triad of pre-eclampsia consists of hypertension, proteinuria, and edema. Hypertension refers to high blood pressure, proteinuria is the presence of excess protein in the urine, and edema is the swelling caused by the accumulation of fluid. These three symptoms are commonly seen in pre-eclampsia, a condition that affects pregnant women, usually after the 20th week of pregnancy. If left untreated, pre-eclampsia can lead to serious complications for both the mother and the baby.