Final answer:
The intervention that helped prove that catheter-associated bloodstream infections (CLABSIs) were preventable consequences of care is a checklist of evidence-based practices.
Step-by-step explanation:
The intervention that helped prove that catheter-associated bloodstream infections (CLABSIs) were preventable consequences of care is (B) A checklist of evidence-based practices applied consistently and collectively every time a catheter is used.
Dr. Peter Pronovost developed a simple checklist to prevent infections from occurring when inserting central intravenous lines. This checklist ensured that all necessary steps were followed and reduced the risk of infections. The checklist was successful in reducing infection rates and saving lives.