Which of the following is a healthy cooking method that helps retain nutrients?

Steaming vegetables is a healthy cooking method that effectively retains nutrients primarily because it involves cooking food without submerging it in water. This method uses steam to gently cook the vegetables, which can help minimize the loss of water-soluble vitamins, such as vitamin C and many B vitamins, that can leach out into boiling water.

Additionally, steaming preserves the color, texture, and flavor of the vegetables, making them more appealing and nutritious. Unlike boiling, where vegetables are often cooked in water at high temperatures for longer periods, steaming requires a shorter cooking time and lower temperatures, further protecting nutrient content.

While frying and grilling can create flavorful dishes, they may introduce excess fats or charred substances that could detract from the healthfulness of the food. Boiling can lead to significant nutrient loss, especially if the cooking water is not consumed. Thus, steaming stands out as the method that maximizes nutrient retention in vegetables.