Baby Names Beginning With "O": Meaning: From the Opal Gemstone?

Questions

A ten-gallon hat holds 3/4 gallon or ---- quarts.?

About 24 percent of alcoholics die in accidents, falls, fires, and ----------?

About 24 percent of American adults say they have participated, at some time or another, in illegal -------------?

About --------- percent of all male Americans between the ages of 10 and 15 were "gainfully employed" at the turn of the century. By 1970, so few in that age bracket were employed that the U.S. Census Bureau did not bother to make inquiries about them.?

About 60 percent of all American babies are named after -------------?