Question 12.

The author first introduces an arc of a comic book where nano-robots are used. He then goes on to show how that fiction is increasingly becoming reality. He then goes on to describe the various features present in today's nano-robots. Option C comes the closest in capturing this point, and hence, is the answer.

Option A is just one of the features of the modern nano-robots and is not the focus of the passage.

Hydrophilic and Hydrophobic materials are not the main point of contention here. Option B can be eliminated.

The author uses the example of X-men to introduce the development of technology today. His main contention is not the content of the comic books and how it would be affected by recent developments in technology. Option D can be eliminated too.