What is the first thing scientists must do before they can begin any work?

Before scientists can begin any work, they must first formulate a clear and testable research question or hypothesis. This involves identifying a specific problem or area of interest that they wish to investigate. Following this, they conduct a thorough literature review to understand existing knowledge and ensure their research will contribute new insights. Finally, they develop a research plan that outlines the methodology and approaches they will use to gather and analyze data.