Answer:
A.an article in a literary journal that analyzes Dickinson's poetry and its impact on later American poets .
Step-by-step explanation:
Option C and D are not even related to Dickinson directly.
If you're going to find information on someone, it's best for you to discard second-hand information if possible. If you're going to consider it, maybe consider it when it comes from a specialist on the subject or someone who is studying the exact subject.