How does the term “frequency” relate to sound?

The song "Take Me Out To The Ball Game" is an example of a song with a three-beat cycle called:

a. "Jumpin' Jim Crow" b. a fox trot c. an operetta d. a waltz

Which of the following statements is an accurate description of this image?

a) It suggests the fertility of American lands while documenting the settled life of native peoples. b) It is an imagined scene based upon legends White probably read in Montaigne’s essay, “Of Cannibals.” c) It creates the impression of a dangerous American wilderness by presenting native peoples as uncivilized barbarians. d) It serves efforts by the Church to search out heathens for the purpose of conversion.