Answer:
Option B-harmful to humans if used improperly
Step-by-step explanation:
Most of the technologies have done more harm as compared to the good. Use of pesticides is an example of a technology, which initially boosted the crop production and then started creating negative health impacts due to its excessive usage.
Now a day, lot of farm produce especially the fruits and vegetables have harmful chemicals residing on the outer skin of edibles. Also the pesticides have reduce the fertility of soil thereby lowering the total produce.
Hence, option B is correct