Option 2 is the correct answer
The main way in which a cataract can serve as a natural protective barrier is by reducing the amount of UV radiation that enters the eye from sunlight, which is also why it can lead to blindness, however.
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The correct answer is option A
The assassination of Archduke Francis Ferdinand triggered the war.
This is an interesting topic in world history, have fun!
It will contribute to a nationalistic experience in China during post war era
