Question

which of the following lists are a reasonable order of steps in a scientific investigation?
ask a testable question, form a hypothesis, plan an experiment
record observations, write clear directions, ask a testable question
decide whether hypothesis is correct, write clear directions, form a hypothesis
record observations, write clear directions, decide whether hypothesis is correct

Explanation:

In a scientific investigation, one first asks a test - able question to define the problem. Then, a hypothesis is formed as a proposed explanation. After that, an experiment is planned to test the hypothesis. The other options have steps in incorrect order as writing clear directions is not an early step and one cannot decide if a hypothesis is correct before forming it and conducting an experiment.

Answer:

ask a testable question, form a hypothesis, plan an experiment