The key to exercise solutions in chapter 9.4 - Survival for the textbook Speakout Upper-Intermediate - Students' Book with authors Frances Eales and Steve Oakes from Pearson Education
Question
Listen to people deciding on things to take on a life raft. Which items below do they talk about? Why do they decide to take / reject each one?
Look at the key phrases. Listen again and tick the phrases you hear.
Answer
a)
lighter - rejected → can't start a fire on a raft, not a priority to cook a hot meal, just survive
blanket - kept → keep warm, use as a towel, protect you from the sun
hand mirror → mentioned but no decision made
b)
It depends on [what / whether] ..., doesn't it?
It's (not) a top priority to be able to ...
I'd say that ... is / are [essential / vital / crucial]
... to keep you [warm / dry / alive],
... to [prevent / keep / protect] you from [the sun / dehydrating / getting ...]