Question

Choose the most appropriate article for the given sentence:

A demonstration is ______ act of showing by giving proof or evidence.

• A. A
• B. An
• C. The
• D. This

Answer 1

The correct option is B An

Here, the sentence talks about the definition or explanation for the word 'demonstration'. When talking in a general sense about 'one' thing or 'one of the many' things, we use the indefinite articles 'a' or 'an'.

The word following the blank begins with a vowel and so we need to use 'an' and not 'a'. So, the correct answer is option B) an.