Final answer:
The "Deep South" of Canada refers to the Carolinian Forest region because of its warm annual temperatures unlike the cold, dry winters associated with the boreal forest.
Step-by-step explanation:
The term "Deep South" of Canada does not commonly refer to the boreal forest regions which are characterized by cold, dry winters and short, cool, wet summers, nor does it relate to mining tunnels. Instead, the "Deep South" refers to the Carolinian Forest region (Option B) which is located in southern Ontario. This region experiences warm annual temperatures and is home to a diversity of plant and animal species that are unique in Canada, being more typical of regions much further south.
Answer: B) The Carolinian Forest & Warm annual temperatures