It was the northernmost point of japanese control by december 1942.

a.) french indochina
b.) hong kong
c.) manchuria
d.) thailand

The best and most correct answer among the choices provided by your question is the third option or letter C. Manchuria was the northernmost point of Japanese control by December 1942.

The Japanese invasion of Manchuria began on September 18, 1931, when the Kwantung Army of the Empire of Japan invaded Manchuria immediately following the Mukden Incident. The Japanese established a puppet state called Manchukuo, and their occupation lasted until the end of World War II.

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