In 1990, who became the first Asian elected president of Peru?

The first Asian elected president of Peru is Alberto Fujimori, who took office in 1990. Fujimori is of Japanese descent and his election was significant as it marked a notable moment in Peru's history, highlighting the political representation of Asian Peruvians in a predominantly mestizo and Indigenous nation. His presidency is well-known for its controversial policies and the challenges of addressing terrorism, economic issues, and human rights during his administration.

The other options, such as Canada, Mexico, and South Africa, refer to different countries entirely and do not pertain to the context of the question regarding the presidency of Peru. Thus, option D is the correct answer as it directly answers the question about the specific historical event in Peru.