Automobiles became increasingly popular because of

D) Ford’s revolutionary use of the assembly line to make less-expensive cars.

Explanation: I'm honestly not 100% sure this is the answer, but I know it's not C. This should be the answer, and if it's not, it's A. But answer D first.

answer: musical connotation

leonard b. meyer (1918-2007) was an american composer, author and philosopher. his work emotion and meaning in music is perhaps the first major treatise on music. it is a philosophical and psychological work, greatly influenced by koffka (one of the major proponents of gestalt psychology). his work deals with the problem of musical meaning and musical communication.