Q33
What is the main advantage of geophysical methods in site investigations?
A.
Provide direct soil samples
B.
Involve simple manual labor
C.
Cover large areas quickly and non-invasively
AnswerD.
Only work for shallow depths
Answer: Option C
Solution
Answer: Option C
Solution:
Geophysical methods like seismic or resistivity surveys allow non-invasive, wide-area coverage for subsurface profiling, especially in preliminary investigations.