The stuff they ask for on the list (and the originals for which you submitted photocopies with your application). Take your health card as well. It's not on the list, but is sometimes asked for.All,
What do we need to bring with us for the interview?
I assume, ID, Passport and PR Card. Anything else we need to bring?
@BalboulOnly what is in the book that’s all you will be tested on nothing about Calgary or Alberta politicians
The book has a section on provincial and municipal politics; it's at the end of https://www.canada.ca/en/immigration-refugees-citizenship/corporate/publications-manuals/discover-canada/read-online/federal-elections.html -- there is a section specifically for the names of voting districts, political parties, Governor-General, Lt-General,...
It seems unlikely that questions will be asked about municipal politics or a voting district (it's still useful to know that stuff, though) as people from multiple areas take the test at the same time.
The provincial and federal information you're to supply in that section could show up on a test, as it applies to all test-takers in a given location. I don't think it probable, but spending a few minutes completing that table -- so you can at least recognize the names -- seems a worthwhile investment of time.