Q1. Choose the most appropriate option to complete the sentence. In an official letter, the subject is __________.
A as long as possible
B stretched and relevant
C brief, clear and relevant Correct
D vague and precise
Explanation
In an official letter, the subject line should state the matter directly so that the reader understands the purpose at once. It is therefore brief, clear and relevant. A subject that is as long as possible defeats the purpose of a subject line. Stretched and relevant is also unsuitable because unnecessary length weakens official communication. Vague and precise is internally contradictory: a subject cannot be unclear and exact at the same time. The correct wording reflects the standard format of formal letters.