The History of the Republican Party

The Republican Party of today has its roots in the early 1850s when it was founded by abolitionists and individuals who felt the government should grant settlement lands west of the Mississippi to pioneers free of charge. The party’s first meeting occurred in Ripon, Wisconsin, sometime in the early 1850s. The first official Republican meeting took place on July 6, 1854, in Jackson, Michigan. The party chose the name “Republican” because it stems from the Democratic-Republican Party of Thomas Jefferson. In its first meeting, members of the party adopted a platform and nominated candidates for election to office in Michigan.
In 1856, the party became a national party when John C. Fremont, a hero of the Mexican War, was nominated to run for president. At that time, the party was a “third party” because the two parties currently in power in the 1850s were the Democrats and the Whigs. Many of the founding Republicans had left the Whig party because they had become despondent. After his campaign, Fremont received 33.1% of the vote and carried 11 states. In the next presidential election of 1860, Abraham Lincoln became the first Republican elected to the office of president. By the end of the year, the United States plunged into war.
The American Civil War erupted over the issues of slavery and states' rights. In 1863, Abraham Lincoln used the Union victory at Antietam Creek, by a fellow Republican named George McClellan, to give political credence to the Emancipation Proclamation, a document that freed all slaves held in bondage by the rebel states. After the war, the Republican congress ratified the Thirteenth Amendment to the Constitution that forever outlawed slavery in the United States. The Fourteenth and Fifteenth Amendments quickly followed which protected the civil rights and voting rights for the newly emancipated African Americans.
The Party also was in a position to help women secure the right to vote in 1920. When the Nineteenth Amendment was ratified in 1920, 26 of the 36 ratifying state legislatures were predominantly Republican. In addition, the first woman elected to Congress was Jeanette Rankin, a Republican candidate from the state of Montana.
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This passage was taken from a pro-Republican blog called It's a Grand Old Flag written by J. Marshall.

How does the author's motivation affect the tone of the article above?
A.
Because the author is a Democrat, the tone is critical.
B.
Because the author is a man, the tone is sympathetic.
C.
Because the author is a woman, the tone is aggressive.
D.
Because the author is Republican, the tone is complimentary.
(this is from study island)