whats the optional one for "Request data" and "Request Review "action in nintex O365

There is no direct counterpart for that. However you can achieve it by creating a new content type having "Workflow Task" as a parent:

with just one Outcome created using the "outcome" type site column, having only one option, for example "Reviewed", or "It's OK":

Then use that Content Type in "Assign a task"  or "Start a task process" action:

Hope it helps!

Best regards,

Tomasz