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: they usually exchanged messages by happiness
(A) they exchanged messages about their happiness
(B)happiness cannot exchange messages
(C)they exchanged their happiness through messages

SOLUTION: B

PROBLEM: I poured some sand on my eye
(A) The sand found in the sahara desert can cure cancer in Japan
(B)Pouring sand on the eye is pointless and dangerous
(C)Sand and eyedrops were friends in their previous lives.

SOLUTION: B

PROBLEM: I saw a car race at the opera hall.
(A) Car races do not take place in an opera hall.
(B)Opera hall's are too fancy for car races.
(C)Opera hall's charge a lot for admission.

SOLUTION:
A