Which hormone(s) is(are) responsible for the development of male sexual characteristics?

Which hormone(s) is(are) responsible for the development of male sexual characteristics?
 
  A) Androgens
  B) Estrogen
  C) Progestin
  D) Testosterone

Question 2

Lucille is going to see her doctor because she is bothered by hot flashes and wonders if she should take hormone replacement therapy. Her doctor is likely to inform her that
 
  A) although such medications were found to be risky in the past, current formulas make them perfectly safe and effective.
  B) hormone replacement therapy was shown to be ineffective in treating hot flashes.
  C) before prescribing the medication, he'll need to evaluate her risk for breast cancer and heart disease.
  D) such medications are no longer available because of the various health risks associated with them.

Question 3

What was one of the findings of the clinical trials carried out by the Women's Health Initiative (WHI) and the Heart and Estrogen/Progestin Study (HERS) in 2002, with regard to women taking HRT medications?
 
  A) A decreased risk of breast cancer
  B) A decreased risk of heart attack
  C) A decreased risk of blood clots
  D) An increased risk of Alzheimer's disease

Question 4

When the estrogen in hormone replacement therapy (HRT) was linked to uterine cancer in the 1970s, the pharmaceutical industry responded by
 
  A) changing the product to include the hormone progestin.
  B) contending that the benefits outweighed the risks.
  C) conducting their own studies to show that estrogen was harmless.
  D) discontinuing to market the HRT medications.