Directions : Look at the underlined part of the sentence there are three possible substitutions for the underlined part. If one of them is better than the underlined part. If one of them is better than the underlined part, indicate your response against the corresponding number. If none of the substitutions Improves the sentence, indicate "No improvement" as your response.

Mailesh's father wrote to him, "it is high time you start preparing for the forthcoming public service commission's examination."