The computer user did not know what he was doing at all, this made the instructional course pure what for him?\nOptions:\n- energy\n- office building\n- hell\n- school\n- house
Let's think now! Step-by-step reasoning:
User
The instructional course was pure hell for him because he felt miserable and tormented unable to follow instructions in the course.
So, the final answer is hell.
Assistant