A. does not involve too much labour
B. reduces road congestion
C. is fast
D. is not easy to detect damages
E. is not affected by weather
Correct Answer:
Option D – is not easy to detect damages
A. does not involve too much labour
B. reduces road congestion
C. is fast
D. is not easy to detect damages
E. is not affected by weather
Correct Answer:
Option D – is not easy to detect damages
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