The correct answer is (b). China and Japan engage in maritime disputes over these islands in East China Sea.
The Senkaku Islands, also known as the Diaoyu Islands in China, are a group of uninhabited islands in the East China Sea. The islands are claimed by both China and Japan, and the dispute over them has been a source of tension between the two countries for many years.
In 2012, the Japanese government purchased three of the islands from a private owner, which sparked protests in China. The Chinese government has since increased its military presence in the area, and there have been several incidents of Chinese and Japanese vessels colliding in the waters around the islands.
The United States has expressed its interest in resolving the dispute peacefully, but it has also said that it will defend Japan if it is attacked by China. The dispute over the Senkaku Islands is a complex issue with a long history, and it is likely to continue to be a source of tension between China and Japan for many years to come.
The other options are incorrect for the following reasons:
(a) The Senkaku Islands are not artificial islands. They are a group of naturally occurring islands.
(c) There is no permanent American military base on the Senkaku Islands. The United States does have a military presence in the region, but it is not based on the Senkaku Islands.
(d) The International Court of Justice has not declared the Senkaku Islands to be no man’s land. The court has not ruled on the dispute between China and Japan over the islands.