What happens when wheat flour is sieved before making dough?

When wheat flour is sieved before making dough, it helps to aerate the flour and break up any clumps, resulting in a lighter texture. Sieving also removes any impurities or larger particles, ensuring a smoother consistency. This process can enhance the dough's ability to rise and improve the overall quality of the final baked product. Additionally, it can help in evenly distributing ingredients if other dry ingredients are mixed in.