This is a question based on exploring cultural identity, and based on the excerpt that is attached to this question, the type of rhetoric that is used in order to persuade the readers the accuracy of Anaya's conclusion is an appeal that is based on the characters of the author. Hope this helps.
Obstacles.
The word impediment means an obstruction, which is what an obstacle is.
Both men foresaw the US as a great future power. However, they differed on the path the nation was to follow in achieving this role. While Jefferson preferred an agrarian nation, Hamilton favored an industrial and business intensive nation. As such, Jefferson detested Hamilton's idea of a strong federal government. Jefferson wanted the bulk of power to rest with the states. These major views were behind polarizing Washington's cabinet into two distinct factions. Hamilton's followers became known as Federalists and Jefferson's Democratic-Republicans.
I believe the correct answer is: A.) An article published in
a scientific journal.
Credible sources (or reliable) are scientific material that
are approved by the scholarly community, and are therefore regarded as
reliable. Materials such as articles, books, monographs, or research papers
that have been published in reputable peer-reviewed sources, or by
well-regarded academic presses, are credible sources that one can use in their
research to back up his/hers arguments. These materials can usually be found in
libraries, and sometimes on the Internet. Therefore, the credible source can be
found in a scientific journal, as it is approved by the scholarly community.
An article on Wikipedia describing the scientific method
cannot be regarded as credible source as anyone can change the
statements/facts.
A blog about the writer's own experiment cannot be credible
as it is a subjective and unapproved by other scientists.
An essay about science in a popular
magazine cannot be a credible source as it is published in popular magazine
and, therefore, not approved by scholarly community (as it is in scientific journal).
The irony is that they are smiling with “torn and bleeding hearts”.
The idea it emphasizes is that they are smiling to hide their pain.
The overall message revealed by the irony is that they are in considerable emotional turmoil and faking happiness to mask their distress.