There are certainly both pros and cons to using email messages.
Pros:
Email travels instantaneously, no need to wait for reply
Email can reach anyone with internet, regardless of location
Cons:
Users with email can spam one another by sending messages constantly
User must have access to the internet to receive email
Basically, email is useful because anyone with internet can send messages to anyone else who has internet, but both users must, of course, first gain access to the internet.
Hello. You did not say what text this question refers to, which makes it impossible for your question to be answered efficiently and specifically. However, to try to help you, I will show you what an argument is and how are the rhetorical appeals that can be used in one. This can guide you in finding the correct answer.
An argument is a position on a theme, where the author demonstrates what he thinks about something or how he understands how such things happen. In addition to presenting a position, the argument presents evidence that provides veracity to the position, showing how it is real and relevant.
To enhance the argument and make it more powerful, rhetorical appeals can be used. These appeals are ethos (which refers to ethics), logos (which refers to logic) and pathos (which refers to emotions and feelings), which are used in sentences to strengthen an important point of the argument and to converge the audience.