How disability is viewed as a social construct

The lifeguard at the local beach record the tides each day the chart below shows the high and low tides over two days

Which type of evidence would support the author's claim?

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.