In which year did Afghanistan join SAARC?

2007

The correct answer is Option 4 - 2007

Afghanistan joined the South Asian Association for Regional Cooperation (SAARC) in the year 2007.
SAARC stands for the South Asian Association for Regional Cooperation. It is an intergovernmental organization established to promote regional cooperation and development among South Asian countries. SAARC was founded in December 1985 with the signing of the SAARC Charter by the heads of state or government of Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka.