Answer:The correct answer is A. testing a hypothesis.Here's why: * Analyzing texture, odor, and solubility are all forms of observation and data collection. * In the scientific method, testing a hypothesis involves conducting experiments or performing observations to gather data that will either support or refute a formulated hypothesis. Maria is performing analyses (tests/observations) to gather data about the unknown material, which directly falls under testing a hypothesis.Let's look at why the other options are less fitting: * B. identifying the problem: This usually happens at the very beginning when a question or a phenomenon needs explaining. Maria is already doing analyses, implying the problem has been identified. * C. formulating a hypothesis: This is proposing a testable explanation or prediction. While she might have a hypothesis in mind (e.g., "This material is X"), the act of doing analyses is the testing phase, not the formulation phase. * D. making a generalization: This comes after data has been collected and analyzed, where conclusions are drawn based on the results. Maria is still in the process of gathering data.