I think it is successful.
The correct answer is C. The evidence textual offers the information to build the main idea. It also means that they are connected but they are different. The main idea has no sense without textual evidence. So, The main idea became the main idea because of the lack of textual evidence or the lack of pieces of information for that.
You example them as an ‘immigrant’ because an immigrant is someone who comes from another country and moves to a different country.
Even though Swift is not suggesting that the rich people in Ireland start eating the babies of the poor, he is still suggesting some realistic solutions. Most of all he is pointing out that the rich need to start doing something to balance out the economy and support the lower classes, instead of treating them like cattle. Comparing them to cattle by suggesting they eat babies points out this flaw of society and that it needs to be changed.
Since you don't include "the following" benefits of college then one may surmise the benefits:
1) Increased education
2) increase in making personal connections that benefit ones ability to get a job
3) personal growth toward becoming independent ...
For starters.
One thought that is not a benefit is
1) having lots of free time to do what one wants to do.
