Answer:
Hyderabad State was founded by Mir Qamar-ud-din Khan who was the governor of Deccan under the Mughals from 1713 to 1721. In 1724, he resumed rule under the title of Asaf Jah (granted by Mughal Emperor Muhammad Shah)
Exploit is usually means a way considered which "unfair"
ex) security exploit
Not sure if you still need it but the answer is (c) new cities were built along the shores of the Great Lakes.
