The simple subject is the noun, so, D. student.
To note details that come to mind to help decide the story’s purpose
Telephones, fax machines, and electronic mail transmit messages at many businesses.
The subject of a sentence is the noun that is doing the action. For instance, in the following sentence “boy” is the subject: <em>The boy kicked the ball.</em> A sentence, however, can have more than one subject, and this will be indicated usually with the conjunction “and.” When a sentence has more than one subject performing the same action, this is called a compound subject as in <em>The boy and girl laughed.</em> With that in mind, we can see that the final sentence of the sentences you provided has three subjects (telephones, fax machines, and electronic mail) that are performing the action “transmit.”
Prejudice and ignorance are mostly evident through all the racist characters who believe Tom Robinson is guilty without any evidence, as well as those who don't care whether or not he had done and only want for an African American to suffer. Innocence is best explained through Scout who is not aware exactly of everything that's going on, but is having a difficult time understanding how people can hate a man because of his race. She sees what's going on but cannot understand how societies work because she is too young.
