Question

scientific method, conversions, classification test retake
which step of the scientific method is a possible scientific explanation that can be tested by further observation or by experimentation.
collect and analyze data
formulate a hypothesis
form conclusion
make observations / research
conduct an experiment
ask a question / identify a problem
further research
communicate results

Explanation:

A hypothesis is a proposed explanation made on the basis of limited evidence as a starting - point for further investigation. It can be tested through observation or experimentation.

Answer:

FORMULATE A HYPOTHESIS