The answer is B. trial by jury of peers. Hope this helped!
First of all, (just to clear this up) the conflict and tension between GB and the colonies was a lot more complex than 2 events. The ones I will name here are important, but take them more as a symbol of the breaking ties of GB and the colonies than the only 2 things that led to the American Revolution (aka take this answer with a grain of salt, it is too simple to be complete).
1) The Sugar Acts/Stamp Acts/Townsend Acts (1763-66): Following the French and Indian war (also known as the 7 years war) Britain had huge amounts of debt from fighting overseas. Many British were outraged that they had to pay the tax alone, because they believed the colonists were responsible for the war. So the British government did what it thought was right and taxed the colonists through 3 direct taxes. These taxes (named above) taxed sugar, paper goods, tea, paper, paint, some metals, and a variety of other things. Colonists were outraged that they were being directly taxed without representation in the British Government and rebelled by boycotting goods, and harming tax collectors, but one especially good example was the Boston tea party, in which Colonists dumped entire cases of British tea into the Boston Harbor to rebel against taxes.
2) Intolerable acts: As a result of the Boston Tea Party, Britain created a series of laws aimed at punishing the colonies for their rebellious behaviour. These were known as the Intolerable acts by colonists and included such things as closing down the Boston Harbor and requiring that the dumped tea be paid for. This was the last straw for many radical colonists, as they believed that their basic rights had been clearly infringed. These radicals used ideas from the Enlightenment to justify trying to sever ties with Great Britain.
Answer: C. The Confederate Army was unable to get supplies and reinforcements quickly.
In many battles during the Atlanta Campaign, Union generals were able to capture strategic points, like the Jonseborough supply depot on the Macon & Western Railroad, where they burned all of the supplies and cut off communications through trains. This happened in other parts, for example, throughout North Georgia or Allatoona Pass.