to choose not to participate
choisir de ne pas participer (choisir de ne pas participer)
"Employees can opt out of the program if they want."
"Les employés peuvent choisir de ne pas participer au programme s'ils le souhaitent." (Les employés peuvent opt out du programme s'ils le souhaitent.)
to accept or take responsibility for something
to keep one's plans or intentions secret
to become comfortable in a new situation
a small but essential part of a large system
to attribute something to a particular cause
a person with no prior knowledge or experience