Question

which intervention is the most effective way to break the chain of infection?
wearing gloves
performing hand hygiene
placing patients in isolation
providing private rooms for patients

Explanation:

Hand - hygiene is a simple yet highly effective measure to remove or kill pathogens on hands, which are common vectors for spreading infections. It can interrupt the transmission of pathogens between different sources and hosts in the chain of infection. Wearing gloves is useful but not as fundamental as hand - hygiene. Isolating patients and providing private rooms are more about preventing the spread from known infected sources rather than a general, most - effective way to break the chain for all types of infections.

Answer:

Performing hand hygiene