For the purposes of this chapter:
(1)  "Abstinence" means the absence of any sexual activity prior to marriage, which activity includes physical contact between individuals involving intimate or private areas of the body that can potentially:
(a)  Result in pregnancy;
(b)  Transmit sexually transmitted diseases and infections; or
(c)  Present emotional risks.
(2)  "Sex education" means the study of the anatomy and the physiology of human reproduction.