Who was Zheng He?a. was the founder of the Ming dynasty. b. was the author of The Dream of the Red Chamber. c. was the founder of the Qing...

The only possible answer to this question is D, that Zheng
He carried out voyages of exploration.

As the link below
shows, Zheng He was an explorer and an admiral.  He was actually a Muslim who came from
the province of Yunan.  His family must have been at least well to do because both his
grandfather and his father had made pilgrimages to Mecca.  As it happens, Zhen He was a
eunuch.

Zheng He's seven voyages (which took place
beginning in 1405 and ending in 1433) took him as far as the Persian Gulf and the East
Coast of Africa.  These voyages were made possible by advances in Chinese technology in
the areas of navigation and shipbuilding.