Answer:
B. The economic ideas expressed in the speech were thought to be
highly popular among likely voters.
Assuming that this is referring to the same list of options that was posted before with this question, consumer goods and the means to buy them most led to more advertising.
Johnson announced that he would not run for a reelection, and that's when Humphrey decided to run, launching his campaign for presidency right after. Considering that he was loyal to Johnson's administration policies considering the Vietnam War, his own party disliked the idea of him running and they opposed to it, since they disagreed on how Johnson was dealing with it all.
They came on a agreement by voting, in some cases each state would get one vote and it would go from there.
Hoped this helped =)
Presidential Reconstruction
In 1865 President Andrew Johnson implemented a plan of Reconstruction that gave the white South a free hand in regulating the transition from slavery to freedom and offered no role to blacks in the politics of the South. The conduct of the governments he established turned many Northerners against the president's policies.
The end of the Civil War found the nation without a settled Reconstruction policy.
In May 1865, President Andrew Johnson offered a pardon to all white Southerners except Confederate leaders and wealthy planters (although most of these later received individual pardons), and authorized them to create new governments.