Directions: In the given sentence, three words are marked as (A), (B), and (C). These words may or may not be placed in their right places. Four options with different arrangements of these words are given below, mark the option with the correct arrangement as your answer. If no change is required mark 'No rearrangement required' as your answer.

If you suspect that 21st-century technology(A) has broken your brain, it will be reassuring(B) to know that attention(C) spans have never been what they used to be.

The correct answer is option 5.

Key Points

The given sentence is - 

If you suspect that 21st-century ______(A) has broken your brain, it will be _______(B) to know that _______(C) spans have never been what they used to be.

• To answer the question let's first look at the meanings of all the marked words - 
• (A) Technology - It's a noun that means 'machinery and equipment developed from the application of scientific knowledge'.(तकनीकी)
• (B) Reassuring - It's an adjective that means 'serving or intended to remove someone's doubts or fears'.(आश्वासनपूर्ण)
• (C) Attention - It's a noun that means 'notice taken of someone or something; the regarding of someone or something as interesting or important'. (ध्यान)
• After looking at the meanings of all the marked words we can conclude that all the words are given in their right places and don't require any rearrangement.
• Therefore, the correct answer is 'No rearrangement required'.