"Radical" and "agenda" were unfamiliar. I broke them down and used context to help determine their meanings.
- <em>the answer "a" Is correct !</em>
<em>In his pre presidential years he was one of America's greatest diplomats—formulating, among other things, what came to be called the Monroe Doctrine—and in his post presidential years (as a U.S. congressman, 1831–48) he fought against the expansion of slavery.</em>
Christmas! It brings the whole family together, and I always have fun watching others open their gifts
Adamant means insistent or determined. It means refusing to change one's mind.
Here, she is so adamant that the speaker eats a healthy breakfast that she chases down the bus. That means she is very determined and uncompromising. The speaker WILL eat breakfast!