Agricultural drought refers to the lack of water in crops due to insufficient soil moisture during the birth of crops, affecting the normal growth and development of crops. Hydrological drought refers to the long-term shortage of precipitation, resulting in a period of time landmark water or groundwater imbalance, water shortage makes river flow, lake water level, reservoir water storage and other phenomena. Socio-economic drought refers to the abnormal water shortage caused by the imbalance between supply and demand of water resources in natural system and human social economy system.
According to the above definition, which of the following options is a socio-economic drought?
The perennial lack of rain led to the implementation of the method of floating water charge according to time period in an industrial zone