Answer:
The correct answer is c. become part of the body structural systems.
Step-by-step explanation:
The body requires many minerals which are called essential minerals. Minerals are important in proper body growth and development. They can become a part of body structural system, for example, calcium and phosphorus are the minerals which are required to form bones and teeth.
Some minerals help in signal transmission through nerves, for example, sodium and potassium. Some minerals are an important part of hormone for example iodine which is used to make thyroid hormone. Therefore the correct answer is c.