Answer:
A ballpoint pen that changes itself into a sword. The name of this pen / sword is Riptide
There could be a few terms but I would say analysis.
Answer: a. Such a class you must have, or you would not have that other class which leads progress, civilization, and refinement.
Explanation: An analogy is a comparison between the features of two or more things, analogies are often used to help explain a point the view or an argument about any topic. In the given excerpt from James Henry Hammond’s speech “Cotton Is King” the piece of text that uses an analogy to justify the existence of the institution of slavery is the one from option a, it compares the "class" of slaves with the progress, civilization and refinement.
I would pick D as the answer