The Mongol conquests resulted in all of the following developments EXCEPT A) a revival of trade on the overland Silk Roads
B) transfers of scientific and technological knowledge
C) the initial diffusion of Buddhism and Christianity to East Asia
D) the spread of pathogens across Eurasia, including the bubonic plague

C) the initial diffusion of Buddhism and Christianity to East Asia

Explanation:

The Mongol conquests in the 13th and 14th centuries led to a revival of the overland silk roads such that trade flourished from Asia to Europe. These improved logistics for transport also facilitated the transfers of scientific and technological knowledge across Eurasia.

Negative effects also resulted from the Mongol conquests because pathogens from the East were able to get to the West with more ease so pathogens spread across Eurasia including the infamous bubonic plague.

Mongol conquests did not however, result in the initial diffusion of Buddhism and Christianity to East Asia even though the Mongols were largely tolerant of religions.