Machine civilization has made human life artificial.
Choose the word/ phrase which is opposite in meaning to the italicized bold word/phrase in the sentence.
A) Genuine
B) Natural
C) True
D) Authentic

Hint: In the above question we have to identify the word from the given options whose meaning is opposite to the meaning of the word ‘artificial’ in the given sentence. Artificial means something which is man-made and which does not occur naturally. It can also be related to an expression that is not genuine.

Complete answer:
Let us first try to understand the meaning of the given options:
A) Genuine - Real, true or without pretence. It can refer to a person who can be trusted and who is sincere. It can also be used to refer to something such as jewellery/stones/ any product. E.g. He is a genuine person and therefore I feel comfortable sharing secrets with him.
B) Natural - Not man-made,usual, god-gifted or that exists in nature. It can refer to a thing, person, behaviour or idea. For e.g. He is a natural born-leader.
C) True - Not false. Something / someone that is real and genuine. Not imaginary but, existing for real. E.g. True love is hard to find.
D) Authentic- Real, genuine, Conforming to facts. E.g. The menu of the hotel was filled with the names of authentic Indian dishes.

Genuine and natural both can be opposite to artificial but option B, natural is the correct answer. It is correct because ‘artificial’ has been used in the sense of ‘unnatural’ in the sentence. Therefore, natural will be the opposite to artificial.

Therefore the correct answer is option ‘B’.

Note: Adjectives are the words that tell us about the quality and quantity of a noun. Both artificial and natural are adjectives because they tell us about the qualities of being man-made and non-man-made respectively.