Final answer:
The northeastern Canadian province with its own time zone is Newfoundland and Labrador, which operates on Newfoundland Standard Time. It is both economically and geographically distinct from other provinces in Canada.
Step-by-step explanation:
The northeastern province in Canada that has its own time zone is b) Newfoundland and Labrador. Newfoundland Standard Time is unique among Canadian provinces because it is offset by half an hour from neighboring time zones. Newfoundland and Labrador is Canada's easternmost province and has a distinct cultural and historical identity.
This province is also notable for its economic history, in which fishing and sea-oriented businesses played a significant role. However, challenges such as overfishing have impacted its economic landscape, making it Canada's poorest province. Despite this, the region's beautiful, rugged landscapes attract tourism, which has been growing in importance.