The International Date Line passes through the Bering Strait between the Diomede Island.

The International Date Line (IDL) is an imaginary line approximately following the 180° line of longitude. It is located in the Pacific Ocean and serves as the demarcation line for calendar date changes. When you cross the IDL, you either move ahead one day or go back one day depending on the direction of travel.

The Bering Strait

The correct answer is option 'A' which states that the International Date Line passes through the Bering Strait. Let's understand why this is the correct answer.

1. Location of the Bering Strait:
- The Bering Strait is a narrow passage that separates the easternmost point of Russia (Chukotka Peninsula) from the westernmost point of Alaska (Seward Peninsula).
- It connects the Arctic Ocean to the Bering Sea and serves as a significant route between the Pacific and Arctic regions.

2. The IDL and the Bering Strait:
- The IDL is not a straight line but rather zigzags to avoid dividing countries, territories, and islands.
- The line passes through the Bering Strait, precisely between the two islands - Big Diomede (Russia) and Little Diomede (United States).
- These two islands are located in close proximity to each other, with the International Date Line running between them.

3. Time Difference:
- The Big Diomede Island is ahead of Little Diomede Island by approximately 21 hours.
- Due to this time difference, when it is Monday on the Big Diomede Island, it is still Sunday on the Little Diomede Island.
- As a result, the International Date Line runs through the Bering Strait to accommodate this significant time difference between the two islands.

In conclusion, the International Date Line passes through the Bering Strait, specifically between the Big Diomede Island (Russia) and Little Diomede Island (United States). This allows for a time difference of approximately 21 hours between the two islands, leading to a change in calendar dates when crossing the IDL in this region.