What is the reproductive strategy in which parental investment is shared but not always

The experiment is the only means of determining whether differences in one variable cause differences in another.

a. true b. false

Marvin is reading a textbook on the history of mental

illnesses, and he is relieved to find that as times shifted from the Middle Ages into the Renaissance, an enlightenment took place. Which of the following statements is Marvin most likely to read in this section of his book? A) "Kinder methods of treating mental illness, including exorcism, were introduced as the era of the Renaissance began." B) "When the Renaissance began, the primary reference that guided the way in which mental illness was viewed was called the Malleus Malleficarum." C) "As the Middle Ages ended, so too did reliance on the medical model." D) "As the Renaissance emerged, mental illness came to be viewed through the medical model."