When was pluto formally downgraded from planet to dwarf planet? a. after the new york times published an article about pluto b. after a vote by the international astronomical union c. after dr. tyson received a letter from a concerned child d. after the hayden planetarium's solar system exhibit opened

The correct answer is B. Pluto was formally downgraded from planet to dwarf planet after a vote by the International Astronomical Union.

Explanation:

Pluto was discovered on February 18, 1930 by American astronomer Clyde William Tombaugh from the Lowell Observatory in Flagstaff, Arizona, and was considered the ninth and smallest planet in the solar system by the International Astronomical Union and public opinion since then until 2006, although its membership in the group of planets in the solar system was always the subject of controversy among astronomers.

After an intense debate, and with the proposal of Uruguayan astronomers Julio Angel Fernandez and Gonzalo Tancredi before the General Assembly of the International Astronomical Union in Prague, Czech Republic, it was unanimously decided to reclassify Pluto as a dwarf planet, requiring that a planet must have orbital dominance. Since September 7, 2006, it has the number 134340, granted by the Center for Minor Planets.

the correct answer is option d. the nature of democracy. on november 19, 1863, president abraham lincoln delivered his famous gettysburg address in gettysburg, pennsylvania. in his speech, rather than focusing on details of the war (soldiers, casualties, aftermath of battle), lincoln invoked the very nature of democracy, that power ultimately comes from the people, when stating, “government of the people, by the people, for the people shall not perish”. these words mean that democracy is a government by the people (citizens) in which the supreme power is vested in the people and exercised directly by the people or by their elected representatives for the benefit of all citizens. the survival of democracy in the united states is one of the reasons why this speech so significant today.

yes you could be a life guard if that the question.