Answer: B.The information provided by environmentalists does not have scientific basis.
Step-by-step explanation:
An environmentalist is a scientists who conducts political and ethical movements in order to make the human society aware about the use and conservation of resources, wildlife conservation, and protection of the environment against the harmful human activities.
According to the given situation, the environmentalists has just proposed the fact that the reducing the water consumption in the laundry can conserve the amount of water but he has not conducted any research. The proposed statement is not supported by any evidence in the form of data. Thus it can be said that the information is incorrect as it lacks scientific basis.