Which property of a substance can be determined using a ph indicator?

You're doing research for a public essay on alternative medicine. which of the following sources has the most reliable information? a.a post on a social networking site about the undesired side-effects of different alternative medicinesb.a recent government report comparing the results of alternative and contemporary medicine for a specified diseasec.an anonymous article on a medical website that claims the success of alternative medicined.a 2003 study conducted by a medical research center about the effects of alternative medicine

These are pieces of information that are not necessarily the meaning or purpose of writing

Name three things the framers of the constitution did to keep the federal government or any part of it from becoming too powerful.