The scientific method plays a crucial role in experimental design by providing a systematic approach to inquiry and discovery. It involves formulating a hypothesis, conducting experiments, observing outcomes, and analyzing data to draw conclusions. This structured process ensures that experiments are replicable and results are credible, allowing for objective evaluation of evidence. The scientific method also promotes critical thinking and minimizes bias, fostering innovation and discovery in various fields. Overall, it is fundamental to advancing knowledge through rigorous and transparent investigation.