Which sentence contains parallel structure?

What does sterling brown mean when he mentions the chain gang a.) brown is referring to people in general, who are chained in their minds. b.) brown is referring to slaves in chains c.) brown is referring to gangs in the ghetto chained to their crimes and poverty d.) brown is referring to men perhaps prisoners singing/chanting while working.

Read the passage from sugar changed the world. sugar is different from honey. it offers a stronger sweet flavor, and like steel or plastic, it had to be invented. in the age of sugar, europeans bought a product made thousands of miles away that was less expensive than the honey from down the road. that was possible only because sugar set people in motion all across the world—millions of them as slaves, in chains; a few in search of their fortunes. a perfect taste made possible by the most brutal labor: that is the dark story of sugar. how does the comparison of sugar to honey reveal the authors’ purpose? it persuades readers that sugar tastes better than honey. it informs readers that there is a connection between slavery and sugar. it informs readers that honey had a major impact on society. it persuades readers that sugar is as important an invention as steel.

Satire can best be defined as the literary form or technique in which and are used to criticize one's vices.