Pine, fir and oak are all:

• A. Softwoods
• B. Hardwoods
• C. Conifers
• D. Deciduous woods

Answer: (A)

Wood types are categorized by two related traits: whether a tree is a conifer (softwoods) or a broadleaf (hardwoods), and whether it is evergreen or deciduous. Pine and fir come from conifers, which are typically classified as softwoods. Oak, on the other hand, is a broadleaf tree that is deciduous, making it a hardwood. Because pine and fir fit softwoods and oak fits hardwoods, the three do not share a single category. In other words, the statement isn’t a perfect fit for all three—pine and fir are softwoods, while oak is a hardwood.