In some employment situations, not all personnel can immediately evacuate a work area per the eap. it may be that some equipment and processes can only be shut down in stages or over time or that there is a requirement to remain briefly behind to secure gas, electric power or other specialize shut-offs. these personnel are referred to as what? 
 a. critical personnel 
 b. evacuation wardens 
 c. safety guides 
 d. wardens suspend assessment