Concept:
Knowledge of global geography requires familiarity with the capital cities of sovereign nations, especially those belonging to the South Asian Association for Regional Cooperation (SAARC) and neighboring regions of India.
Step 1:
The capital city and largest urban center of Afghanistan is Kabul, located in the eastern section of the country.
Step 2:
The remaining options—Kandahar, Jalalabad, and Taleqan—are major historical cities or provincial capitals located within Afghanistan, but they do not serve as the nation's political capital city.