Question

you will catch a cold if you don't keep your feet dry      unless.....

Answer 1

you will catch a cold if you don't keep your feet dry     

unless..you keep your feet dry, you will catch a cold...

Answer 2

you will catch a cold if you don't keep your feet dry     

unless...you keep your feet dry, you will catch a cold..

Answer 3

you will catch a cold if you don't keep your feet dry     

-> Unless you keep your feet dry, you will catch a cold.