Correct Answer:
B. Naila Kiani
The correct answer is Naila Kiani. Naila Kiani is a prominent Pakistani mountaineer who achieved the remarkable feat of summiting all 8,000-meter peaks by 2023, making her a national hero. Samina Baig is known for being the first Pakistani woman to summit Mount Everest and K2, but not all 8,000m peaks by the specified year. Uzma Yousaf is another notable Pakistani mountaineer, but she has not completed all 8,000m peaks. Therefore, options A and C are incorrect.