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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Saurabh 1
Correct answer would be crest of an anticline and massive rock. As in case of anticline rocks(beds) dip away from each other and hence providing stability (while in case of syncline the dipping in same direction thus leading to unstable rock foundation for tunneling). Also massive rocks are aquifuge generally hence less or minute chance of instability. While highly jointed is one of the good aquifer formation and will be porous and permeable both, thus leading to filling of water in the cavities or cracks in the rock.