A computer is a common noun.
Common nouns are things that are just as the name suggests, common. An easy way to remember the difference are proper nouns are nouns you capitalize. States and people's names are two examples of proper nouns. Common noun examples include apple, monkey, and cell phone.
In answer C, "aunt" should be capitalized to make it Aunt Judy.
So the correct answer is C.
Hope that helped =)
Info on it can be found here: http://www.studymode.com/subjects/young-man-visiting-a-western-dude-ranch-critique-page1.html
The first similarities between the book and the radio play is that they both describe the same thing about mars. The second similarities between the book and the radio play is that they both talk about what they see through the microscope. Both of those similarities create different tones.
