Which of the phrases 1, 2, 3 and 4 given below should replace the phrase given in bold in the following sentence to make the sentence grammatically correct? If the sentence is correct, as it is and ‘No correction is required’, mark 5 as the answer. We admire his attempting to climb the summit in such bad weather.

• A. his attempting to climb
• B. his attempt of climbing
• C. him for attempt of climb
• D. his for attempt to climbing
• E. No correction required