Correct Answer:
A. Pakistan
The correct answer is Pakistan. The 24th Shanghai Cooperation Organisation (SCO) Summit was held in Pakistan on 15–16 October 2025 in Islamabad, marking the first time Pakistan hosted the summit since becoming a full member in 2017. Among the options:
- Pakistan: Correct, the host country for the 24th summit.
- China: Hosted previous summits, not the 24th.
- Kazakhstan: Hosted the 23rd summit in 2024.
- Tajikistan: Not the host for this summit.
Therefore, the correct answer is "Pakistan".