Regarding Amazon SNS, to send messages to a queue through a topic, you must subscribe the queue to the Amazon
SNS topic. You specify the queue by its ____.

A.
ARN

B.
Token

C.
Registration ID

D.
URL

Explanation:
In Amazon SNS, to send messages to a queue through a topic, you must subscribe the queue to the Amazon SNS topic.
You specify the queue by its ARN.
http://docs.aws.amazon.com/sns/latest/dg/SendMessageToSQS.html