To answer this question, you need to have knowledge about a significant explosion that occurred in the early part of the twentieth century. Let's go through each option to understand why it is correct or incorrect:

Option A) Kamchatka Peninsula - This option is incorrect because the significant explosion did not occur on the Kamchatka Peninsula.

Option B) Franz Josef Land - This option is incorrect because the significant explosion did not occur in Franz Josef Land.

Option C) Tunguska - This option is correct. The Tunguska event, also known as the Tunguska explosion, was a massive explosion that occurred on June 30, 1908, in a remote area of Siberia called Tunguska. It is believed to have been caused by a large meteoroid or comet fragment that exploded in the atmosphere, releasing a tremendous amount of energy. The explosion flattened trees over an area of about 770 square miles (2,000 square kilometers) and is considered the largest impact event in recorded history.

Option D) Vladivostok - This option is incorrect because the significant explosion did not occur in Vladivostok.

The correct answer is C) Tunguska. This option is correct because the Tunguska event refers to the devastating explosion that occurred in the early part of the twentieth century in a remote area of Siberia called Tunguska.

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• Wrong explanation