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

A. a

B. an

C. the

D. no article

Answer: Option D

Solution(By Examveda Team)

Articles are part of speech, used to indicate nouns and to specify their application. Definite articles (the) limit the meaning of a noun to one particular thing. Indefinite articles (a, an) are used when referring to a noun in a general sense.
The word 'evidence' is an uncountable noun. Sentences that refer to uncountable nouns do not require any article.