He is likely to take measurements because setting up electrical wiring, installing power lines, and repairing equipment all consist in another job.
C. Surroundings would be your answer. Heights can also be an answer, but they want the exact more direct answer, so C.
Hope this helps.
D - if she were to upset her tutor.....
Answer:
Your books will lie there until you lay them elsewhere.
It describes the types of transportation used by various troops throughout history