Explain the social structure of latin america

The primary purpose of a certificate of confidentiality is to: allow law enforcement to investigate abuse cases.protect researchers from disclosing conflicts of interest.prevent subjects from knowing the purpose of a study.protect identifiable research information from compelled disclosure.

Me and i you plus a 5 stars and brainlist

Which of the following is considered a push factory a.available jobs b. unfair treatment c. religious freedom d.affordable land