Answer:
D. Admiral Zheng He navigated the Indian Ocean a total of seven times and helped to strengthen Chinese trade routes in the region.
Step-by-step explanation:
Zheng He), also known as Ma Sanbao, was a military, marine and Muslim Chinese explorer especially famous for his seven naval expeditions, made between 1405 and 1433, which some legendaryly identify with the travels of Simbad.
During their expeditions, all of which began in Nanjing, Zheng He explored Southeast Asia, Indonesia, Ceylon, India, the Persian Gulf, the Arabian Peninsula and East Africa to the Mozambique Channel.
The number of his trips varies depending on the method of division, but it is generally considered that he sailed and explored "the western ocean" seven times. Their squads are impressive when compared to their European contemporaries: around 30,000 men and a variable number of ships, between fifty and three hundred.
His trips produced an important diplomatic, commercial and cultural exchange with the foreigner. Despite contributing to demonstrate Chinese organizational capacity and technological power, they did not produce territorial annexations due to the lack of tradition of colonialism and imperialism in China.