There is a short passages given below. Read the passage and answer the question that follows it.
The famous theory of relativity was given by Albert Einstein. It stated that time travel is theoretically possible. Let us assume that time travel were to be made possible through some technological breakthrough. Would it not be advantageous to send someone back in time to prevent the assassination of Archduke Franz Ferdinand in $1914$ and thus keep World War I from ever occurring?
Which of the following assumptions can be deduced from above argument?
- It is not possible to alter a significant current in world history merely by changing a single event.
- The technology necessary for time travel is likely to be developed in the near future.
- If Franz Ferdinand had not been assassinated, some other catalytic event would have led to the start of World War I.
- The assassination of Franz Ferdinand was the crucial event that triggered the start of World War I.