A 16-year-old pregnant female exercises at the gym 3 times a week. Which choice should not deter her from exercising?

Rationale: A. Mild nausea prior to exercising is generally not a contraindication to physical activity during pregnancy. The patient can adjust intensity or timing of exercise, but routine exercise is still encouraged if tolerated. B. Calf pain could indicate a deep vein thrombosis (DVT), which is a serious condition requiring immediate medical evaluation and would warrant stopping exercise. C. Pain in the back, hips, or pubic area may signal musculoskeletal strain or pelvic girdle dysfunction, which can be aggravated by exercise and should be evaluated. D. Chest pain during pregnancy could indicate cardiac or pulmonary complications and is an immediate reason to discontinue exercise and seek urgent medical care.