Question

Which activity would be an appropriate first step when designing an experiment?

Answer 1

I think you are talking about the Scientific Method. The first step is to Ask A Question.

Here's what you do next:
2. Research.
3. Make a hypothesis.
4. Experiment while controlling variables.
5. Analyze data and make a conclusion.
6. Communicate your findings.

(If the experiment doesn't work, try, try again!)

Answer 2

The appropriate initial step when you design an experiment is number (2). It is doing research about the problem utilizing information from different reliable sources. Among all the choices, this is the first step that should be done because you have to know everything about the problem first before the other 3 steps are done.