Answer:The correct answer is D. conducting an experiment. EXPLANATION:; The steps outlined involve: - Setting up the experiment: Placing detergent solutions on a table and soaking stained clothes.- Observing results: Detergent X removes stains faster than Detergent Y.- Comparing results: Detergent A is better than Detergent B.- This process aligns directly with the scientific method, where conducting an experiment is a crucial step. HOPE IT HELPS YOU BETTER