Rem sleep is question 20 options: a) reduced by alcohol and reduced by sleeping pills. b) increased by alcohol and increased by sleeping pills. c) increased by alcohol and reduced by sleeping pills. d) reduced by alcohol and increased by sleeping pills.

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3