Which of these is not a vitamin?
d
b
Niacin
B12
Od
lodine

Which u. s. state is home to the fewest species of mosquitoes?

*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

Which method of administration would result in the highest concentration of the drug in the brain?