In iambic pentameter, each verse consists of five metrical feet. Meter is a poem's rhythm, and feet are units of that rhythm.
In an iamb, an unstressed syllable is followed by a stressed syllable, as in the word "hello."
"Penta" means five, so a verse of iambic pentameter has five iambs.
Five pairs of unstressed syllables followed by stressed syllables.
Five pairs gives a total of ten syllables. So the answer is B, "each line contains ten syllables."
Parody
A parody in music is a humorous imitation of a serious composition.
Answer:
The Grapes of Wrath can be read as a proletarian novel, advocating social change by showing the unfair working conditions the migrants face when they reach California. The men who own the land there hold the power, and attempt to control supply and demand so that they can get away with paying poor wages.