Which saw is primarily used for creating straight cuts across wood grain?

The correct choice is a crosscut saw, which is specially designed for making straight cuts across the wood grain. The primary function of a crosscut saw is to cut with the grain of the wood, which ensures cleaner and more precise cuts, particularly in larger pieces of lumber. The design of the teeth on a crosscut saw allows it to slice through the fibers of the wood effectively, making it an ideal tool for this purpose.

While a table saw and a circular saw can also make straight cuts, they are more versatile saws that can be utilized for various types of cuts, including rip cuts (cuts along the grain) and crosscuts, depending on the blade used and how the material is fed through the saw. A scroll saw, on the other hand, is designed for intricate and curved cuts rather than straight cuts across wood grain. Hence, for straightforward crosscutting tasks, the crosscut saw is the optimal choice.