The Muses taught which creature the riddle it asked passers-by, which Oedipus finally answered correctly?

In Longfellow's epic poem, Minnehaha is the beloved of which hero? Which university's mission statement has highlighted its location in Indianapolis, "one of America's most livable citie… Modern racing of which dogs took off in the early 1900s with mechanical lures such as a stuffed rabbit skin pulled arou… X-Acto is probably the best-known brand of which precision tool used by artists and model makers? The name of which microscopic life forms, some of them nasty, comes from the Greek for "little rod"? The name of which dance in 3/4 time comes from the German for "to revolve"? Which smooth-skinned, peach-like fruit takes its name from the drink of the mythological gods? What is the name of the pivoted mount that lets a rocket engine's combustion chamber and nozzle swivel to steer?