In CB radio slang, made popular by C.W. McCall's "Convoy," which code means "OK"?

Cavatica is the last name of the title character of which 1952 E.B. White novel? What does the Latin phrase "caveat emptor" mean? Johnny Hart created which comic strip about cavemen, first published in 1958? Cavers use special dyes to trace the flow of what? CBS reran which 1970–71 police series after its star, Burt Reynolds, made it big in the movies? Which 1969 Creedence Clearwater Revival hit about a riverboat was later a smash for Ike & Tina Turner? Who wrote and sang lead on Creedence Clearwater Revival's 1969 hit "Proud Mary"? Cecil B. DeMille directed two versions of which biblical epic, a silent one in 1923 and a widescreen one in 1956?