Final answer:
Direct disposal into freshwater bodies like lakes and streams is not a correct way to dispose of formation brine, as it can cause serious environmental and health issues.
Step-by-step explanation:
The correct way to dispose of formation brine that is NOT environmentally acceptable is Direct disposal into freshwater bodies such as oceans, lakes, streams, and groundwater. Proper disposal methods include reinjection into the original reservoir, using evaporation ponds, or surface discharge with the correct permits in place. Directly disposing of brine into freshwater bodies can lead to contamination, harming aquatic ecosystems and affecting the quality of drinking water sources.