Explanation

Shehroze Kashif is the correct answer as he holds the record for being the youngest Pakistani mountaineer to summit all fourteen 8,000-metre peaks. Ali Sadpara is incorrect because he is not recognized for this specific achievement. Naila Kiani is incorrect because she has not achieved the feat of summiting all fourteen 8,000-metre peaks. Sirbaz Khan is incorrect because he is not the record holder for this accomplishment.