Final answer:
She should be careful not to overcook her vegetables because _water-soluble vitamins_ are easily destroyed during cooking.
The correct answer is: 1) water-soluble vitamins.
Step-by-step explanation:
Lisa should be careful not to overcook her vegetables because water-soluble vitamins, specifically vitamins B and C, are easily destroyed during cooking. These vitamins dissolve into the water when a vegetable is boiled and can be lost when the cooking water is discarded.
Therefore, it is important to cook vegetables in a way that preserves these nutrients, such as steaming or microwaving, and to consume the water used for boiling, if possible, to retain the vitamins that may have leached out.
To preserve the water-soluble vitamins B and C in her meals, Lisa should avoid overcooking vegetables and consider cooking methods that do not lead to significant nutrient loss.
The correct answer is: 1) water-soluble vitamins.