Answer:
D, instructional designer
Explanation:
An instructional designer is a professional that is saddled with the job of designing courses, redesigning courses, creating teacher guides, etc for the sole purpose of learning by students.
The job of an instructional designer is very important in the learning process as without them, teachers would not know what to teach student at a certain age or grade.
Instructional designers try to create the best possible ways to present learning contents such that any individual can assimilate or comprehend it easily thus improving performance and knowledge of the student.
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