Hydraulic fracturing is the technique of fracturing rocks using
pressurized liquids. The technique involves the process of drilling
deep wells. Thus it canlead to ground water contamination. It also
utilizes large amount of fresh water. During the process, high
amount of particulate matters are emitted into the atmosphere and
therby results in air pollution. Methane and other volatile
pollutants are emitted into the atmosphere from the eqipments used
in the technique.
Hence, from all of the reasons sited above, the answer canbe the
the second statement as the technique will not involve the removal
of mountain tops for coal extraction.