The president was assassinated.
The defeat of the Spanish Armada in 1588 was important because it saved England from a Spanish invasion. Since Spain were involved in plots against her. She had to defend England's interests against the Spanish threat due to pressure for the public and her Privy Council.
It would be beneficial because more people would vote. There are numerous elections and the turnout is usually small so fewer people decide since others are apathetic or don't care about the local elections. With fewer elections it would be a bigger thing and more people would go out and vote which is important because it represents the will of the people.
I believe the answer is C, hope this helped