Risk analysis is a tool used to organize how we think about complex environmental systems. When we think about risk from a systems perspective we can decide whether it's most effective to:

a. all of these

b. limit the extent to which the hazard can harm us

c. change out activities to avoid particular risks

d. limit the extent to which the hazard can come in to contact wit us

e. provide some sort of offset or compensation for being harmed by the hazard