Which country joined SAARC most recently?

Which country joined SAARC most recently?
Past Papers: PMS Combined Competitive Examination — Past Paper MCQs
A: Nepal
B: Maldives
C: Afghanistan
D: Bhutan

Afghanistan became SAARC’s eighth member in 2007; expanding regional dialogue. Nepal; Maldives; and Bhutan are founding members. This inclusion reflects SAARC’s evolving scope; significant for studying regional alliances and their impact on South Asian stability and cooperation.