Christopher came down with chicken pox after spending time in his child’s day care. the chicken pox represents what link in the chain of transmission in

susceptible host
infectious agent
mode of transmission
portal of entry
reservoir

Based on the given situation above, when Christopher acquired chicken pox after spending time in his child's day care, the chicken pox represents the INFECTIOUS AGENT in the chain of transmission. The Chickenpox is an infectious disease caused by the herpes zoster virus and is very contagious.  

Ignoring a fellow nurse's dangerous treatment of a patient or inappropriate relationship with a patient

Healthy ways to approach and manage emotions would be to stay active, as exercise is a good outlet for any emotion and boosts your mood. also writing down your emotions is a good way to get anything off your chest.