Which of the following correctly sequences the steps of the scientific method? options: a) question, observe, explain, design and conduct experiment, collect and analyze data, report findings b) observe, question, make a testable explanation, experiment, collect and analyze data, state findings c) form a hypothesis, observe, investigate a testable question, collect and analyze data, state results d) design and conduct an investigation based on a testable question, form a hypothesis, collect data, state findings