How much has social media inspired Halloween purchases over the years

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?

Which states universal prekindergarten has been most effective in preparing children for school?

Which of the following statements best describes relations between india and pakistan? a. the countries have had peaceful relations since the partition of india. b. the countries have an ongoing trade dispute with bangladesh. c. the countries have had conflicts over the region of kashmir. d. the countries have agreed not to develop nuclear weapons.