The correct answer should be E. The second aim is described with a gerund instead of an infinitive.
In order to make it parallel, it should sound "He aims to earn a little and spend less than he earns"
C. It makes most sense because graduation is related to school and not having much time can lead to panic.
It reflects a normal speaking pattern <span>because it is in Iambic Pentameter. The pattern falls so that it is a unstressed syllable, followed by a stressed.</span>