Final answer:
The beverage that provides protein, unsaturated fatty acids, calcium, and usually vitamin D is soy milk, which is also often fortified with additional nutrients.
Step-by-step explanation:
The beverage among the choices given that provides protein, unsaturated fatty acids, calcium, and usually vitamin D is d) Soy Milk. Soft drinks, fruit juices, and alcoholic beverages do not typically contain these nutrients. Soy milk is often fortified with calcium and vitamin D, and it naturally contains protein and heart-healthy unsaturated fats. Low-fat and non-fat dairy products also provide these nutrients with less fat and calories; however, for those who are lactose intolerant or prefer plant-based options, fortified soy milk is a great alternative. Additionally, beverages like cow's milk are naturally high in calcium, and vitamin D is often added as a fortification to help build strong bones.