Option 1 -> "In the event of" means "if something happens" or "in case of" - used for conditional situations.
Option 2 -> "In comparison to" is used to compare two things - doesn't fit emergency response context.
Option 3 -> "In favour of" means supporting or preferring something - inappropriate for this context.
Option 4 -> "With reference to" means "regarding" or "concerning" - doesn't convey the conditional nature needed.
Hence, Option 1: In the event of -> This is the standard phrase used to express "if a particular situation occurs" or "in case of", making it perfect for describing emergency procedures and conditional actions -> correct