The Whig party disintegrated mostly over slavery: the northern Whigs were often anti-slavery and the Southern Whigs were mostly slave owners, therefore they would be pro-slavery.
The Republican party was formed in 1854 by the anti-slavery Whigs, together with other politicians -the same year as when the Whig party was dissolved!
the connection is that the anti-slavery Whig Party members that still wanted to be in politics needed a party to work with - so they participated in the creation of the Republican Party.
You must be able to keep your audience's motivation in mind in order to persuade them into what are you saying, because keeping in mind, what the audience wants gives you an opportunity to support you on your side, winning them and making your persuasion more relevant to them, which gets them hooked.
i believe it's C) his commitment to universal human rights
