The hormone ______ reduces the effects of oxytocin

According to the article Betting on the Winners about therapy for gambling, in the six month follow-up,

the members of the treatment group who could be located (a) were gambling again at the same level as before treatment (b) were gambling again, but had their gambling under control (c) had stopped gambling but started abusing alcohol (d) showed levels of gambling similar to their levels immediately after receiving treatment

Although it once stood first, the percentage of the U.S. population who graduates from high school has dropped to 24th in industrialized countries. In 2001, an OECD survey found that approximately ___________ of U.S. high school students graduate

a. 10% c. 50% b. 25% d. 75%