What should the certified volunteer preparer do before starting the tax return?

Answer is: verify the return is within tax payer certification level.
Volunteer tax return preparers must be certified to prepare taxes and perform reviews of returns: For that purpose is VITA/TCE Program, volonteer must take the Standards of Conduct training and pass the certification test.

It depends on what you believe, if you’re christian that you would have been told that the first humans were created by god and that we’re all decedent's from adam and eve but scientist say otherwise