Final answer:
The moose is the largest member of the deer family found in Alberta, known for its great size and broad antlers. Option D is correct.
Step-by-step explanation:
The largest member of the deer family found in Alberta is the moose. Moose are known for their impressive size and distinctive features, such as their large, palmate antlers that can span across six feet. Ungulates, including deer and moose, are hoofed animals adapted to various environments.
The moose, in particular, being larger than other members like the white-tailed deer, mule deer, and elk, has hoofs that sustain its whole body weight while moving through different terrains, from forests to wetlands.