Option 4 is the correct answer. It states that the matches in options B, C and D are wrongly matched. Let`s analyze each option:

Option A: Typhoons are correctly matched with the China Sea. Typhoons are tropical cyclones that occur in the North Western Pacific Ocean region, including the China Sea. So, option A is not wrongly matched.

Option B: Hurricanes are incorrectly matched with the Indian Ocean. Hurricanes are tropical cyclones that occur in the Atlantic and Eastern Pacific Ocean regions, not the Indian Ocean. So, option B is wrongly matched.

Option C: Cyclones are correctly matched with the West Indies. The West Indies, which includes the Caribbean Sea, are prone to cyclones. So, option C is not wrongly matched.

Option D: Tornadoes are incorrectly matched with Australia. Tornadoes can occur in many parts of the world, including Australia. So, option D is not wrongly matched.

In conclusion, the correct answer is option 4 as it correctly identifies that options B, C, and D are wrongly matched.