"Then, when I saw Newton drinking it, I felt bold enough to cup my hand and drink a mouthful of water myself. It tasted like ambrosia. One sip was enough to wipe out every sign of both physical and mental fatigue."a. Who is ‘I' referred to?

The "I" refers to the storyteller who is Professor Trilokeshwar Shonku.

Explanation:

This question is about the book "The Diary of a Space Traveler and other Stories" which features a narration with a first-person point of view. That person is Professor Trilokeswar Shounk who wrote the book to tell his experiences and moments during a series of space travels he made. In this case, the teacher is referring to himself when he uses the pronoun "I" in the narration.