TASK DEFINITION: In this task, you are given an impractical statement. You are also given three reasons (associated with "A", "B", "C") explaining why this statement doesn't make sense. You must choose the most corresponding reason explaining why this statement doesn't make sense.
PROBLEM: You can sing in a library
(A) Singing is usually prohibited in a library
(B)A bad singer is not welcome in a library
(C)A bad song in a library distracts readers

SOLUTION: A

PROBLEM: The troop asked for assistance with their gun
(A) Guns are under strict control in most of the countries
(B)Gun is a weapon, it cannot be used for asking assistance
(C)Guns are usually made from metal

SOLUTION: B

PROBLEM: brother likes to watch music before sleeping
(A) music is not interesting enough for my brother
(B)soothing music is helpful to sleep for my brother
(C)music cannot be watched but only listened to

SOLUTION:
C