These countries have large timber resources:
This question has multiple answers.
In timber reserve trees are significant because they provide valuable goods, including wood, paper, and fruit. Forests cover-up about one-third of the land area of The U.S.A., and though Canada has a much larger area of forests, the U.S.A. produces about three times as much timber.
This is because the American forests are all in areas which are relatively easily accessible. Forest stretches east in a broad belt from the Rocky Mountain slopes to the Atlantic Ocean and these forests are exploited wherever transport facilities make them sufficiently accessible.
In tradition the forests of the Prairie provinces are modestly used and the major awkward areas are in the Maritime Provinces and the St. Lawrence- Great Lakes region.
Thus, the correct option is B, C and D.