How many read request units of the DynamoDB table are required for an item up to 8 KB using one strongly consistent read request?

Answer options:

A.1
B.2
C.4
D.8

Answer – B
One read request unit represents one strongly consistent read request, or two eventually consistent read requests for an item up to 4 KB in size.
As in the question, the item is up to 8KB, the DynamoDB table needs two read request units.
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.ReadWriteCapacityMode.html