What event in 2011 caused manufacturers in several industries worldwide to wait 6 months or longer to see their supply chains working normally again?

A. German tornado

B. Chinese flood

C. U. S. hurricane

D. Japanese earthquake and tsunami

D) Japanese earthquake and tsunami

Explanation:

On March 11, 2011, a 9.1 magnitude earthquake occurred a couple hundred miles from Tokyo in the ocean. This earthquake caused a huge tsunami (30 feet high) that damaged large coastal areas in Japan, including several nuclear reactors and factory centers for major corporations like Toyota, Honda, Nissan, Toshiba, Sony, Canon, etc.