Run-on sentences make text more difficult to read.
Run-on sentences can change the intended meaning of a text.
Run-on sentences can make a sentence confusing.
Overall, run-on sentences are just a bad idea.
C. The narrator feels disillusioned
The best answer is the final one.
In "No Exit," Estelle needs a mirror because she doubts she exists unless she can see herself. This behavior is another example of what Sartre says is "bad faith." This is an example of bad faith because Estelle, having no faith in herself, needs something external (i.e., a mirror) to define herself, instead of looking inward.
B IS THE RIGHT CHOICE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!