Step 1: Understanding the location of Yokohama.
Yokohama is a major port city located in Japan. It lies on the island of Honshu, near Tokyo, and is one of the largest cities in Japan.
Step 2: Analyzing the options.
(A) Japan: Correct. Yokohama is situated in Japan and serves as a key commercial and industrial hub.
(B) Russia: Incorrect. Russia does not have any city named Yokohama.
(C) Great Britain: Incorrect. Yokohama is not located in the United Kingdom.
(D) China: Incorrect. Though close geographically, Yokohama is in Japan, not China.
Step 3: Conclusion.
Hence, Yokohama is located in Japan.