John Quincy Adams went on to win the presidency in a highly contentious election in 1824, and served only one term. Outspoken in his opposition to slavery and in support of freedom of speech, Adams was elected to the House of Representatives in 1830; he would serve until his death in 1848.
Around 2.2 billion people are Christian
D. Transformation.
There was CHANGE happening during the Industrial Revolution (i.e. farm work to machine work). So the economy was changing aka "transforming".
A revolution would be a synonym for a rebellion/uprising/upheaval if we were talking about an event like the French Revolution (French poor were rebelling against the rich Royals).