The ganges and brahmaputra are examples of
a. rivers
c. cities
b. lakes
d. mountain ranges

The correct answer is A. Rivers.

Explanation

The Ganges River is an Asian river that crosses India and Bangladesh. Its source is in the Himalayas and the river covers around 2525 km. Additionally it is the most sacred river of the Hinduism. However, it is one of the most contaminated rivers in the world. On the other hand, The Brahmaputra River is one of the longest in Asia, as the Ganges its source is in the Himalayas and covers around 2896 km and flows into the Gulf of Bengal and it is sacred for the Hinduism. So the correct answer is A. Rivers.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).