Answer:
<h2> A.I'm not sure just I add it</h2>
I feel emancipation proclamation was probably one of the bigger turning point but what came after C which was WWII was also quite significant.
The correct answer is Sinners in the Hands of an Angry God. This was a famous sermon because it depicted what happens in hell to sinners. This was important for the Great Awakening because they took the concept of Hell very seriously and wanted to avoid it.