Question

what information does the narrator withhold at the beginning of the black cat in order to increase suspense and encourage the reader to continue reading

Answer 1

I think 
The name of the town he lives in and his position in the town. 

Answer 2

Answer:

The events that have caused the narrator to think he will die the following day.

Explanation:

At the beginning of the short story "The Black Cat" by Edgar Allan Poe, we learn that our narrator is a condemned man. He is going to die the following day. However, the events that have caused the narrator to think he will die the following day are not explained. This lack of information creates suspense and encourages the reader to keep reading. Moreover, this hints at the fact that the narrator is most likely evil and unreliable.