Step 1: Understanding the SAARC membership.
The South Asian Association for Regional Cooperation (SAARC) is an organization of South Asian nations established to promote regional cooperation and development. Afghanistan became a member of SAARC in 2007, increasing the organization's membership to eight countries.
Step 2: Analysis of options.
- (1) Afghanistan: This is correct. Afghanistan joined SAARC in 2007.
- (2) Nepal: Nepal was one of the founding members of SAARC, so it did not join in 2007.
- (3) Bangladesh: Bangladesh is also a founding member of SAARC, and it did not join in 2007.
- (4) Pakistan: Pakistan was a founding member of SAARC and did not join in 2007.
Step 3: Conclusion.
The correct answer is (1) Afghanistan.