What is used by the body to synthesize vitamin d maintain the proper functioning of nerve cells keeps skin soft and supple and transports fat to cells

At school, there have been a lot of rumors going around about how certain sexually transmitted diseases are spread. which skill would be most valuable to you take the necessary steps to learn what you need to know to protect yourself? a. self-direction b. critical thinking c. problem solving d. effective communication       select the best answer from the choices provided.