Answer :
Among the most populous of South Asian cities, Karachi is located in a)Pakistan and Dhaka is located in Bangladesh. Karachi is the second most populous city in the world and has a big night life, with Pakistan's main seaport and financial center being in Karachi. Dhaka is the capital of Bangladesh and is a major financial center in South Asia. It is also named the Rickshaw Capital of the World.
Answer:
a. Pakistan; Bangladesh
Explanation:
Among the most populous of South Asian cities, Karachi is located in "Pakistan" and Dhaka is located in "Bangladesh"