A. To pursue A grades during their higher studies, while staying within their comfort zone, students often opt for easier courses, divesting their abilities to take risks and to focus on staying positive and unfazed when faced with failures.
->Meaning: To pursue A grades, students opt for easier courses. As a result, they are divesting their abilities to take risks, and they are divesting their abilities to focus on staying positive.
Seems fine.
B. To pursue A grades during their higher studies, students stay within their comfort zone, often opt for easier courses, divesting their risk taking abilities and focus on staying positive and unfazed when faced with failures.
->Wrong,
This sentence says: To pursue A grades during their higher studies, students focus on staying positive and unfazed when faced with failures.
But, the intended meaning is that students are divesting their abilities to focus on staying positive.
C. To pursue A grades during their higher studies, while staying within their comfort zone, students often opt for easier courses, divesting their abilities to take risks and focus on staying positive and unfazed when faced with failures.
-> Wrong,
Same as "B"
D. To pursue A grades during their higher studies, students often opt for easier courses, staying within their comfort zone, divesting their abilities to take risks, and focusing on staying positive and unfazed when faced with failures.
->Wrong,
This sentence says: students often opt for easier courses and as a result, they are focusing on staying positive and unfazed when faced with failures.
But, this is nonsensical.
E. To pursue A grades during their higher studies, students often opt for easier courses to stay within their comfort zone, divest their abilities to take risks and focus
on staying positive and unfazed when faced with failures.
->Wrong,
This sentence says: To pursue A grades, students divest their abilities to take risks.
But, the intended meaning is that students are divesting their abilities to take risks as a result of opting for easier courses.