Final answer:
The most challenging environmental issue related to e-waste is water contamination, caused by the toxic chemicals and precious metals found in electronics that can leach into water supplies if not properly managed.
Step-by-step explanation:
The most challenging environmental problem associated with e-waste is c) Water contamination. Electronic waste, or e-waste, includes obsolete, broken, and worn-out electronics ranging from computers to mobile phones to televisions. These products contain toxic chemicals and precious metals, which can leach into the soil and eventually reach water supplies if not properly disposed of. In addition, improper e-waste recycling practices, such as burning electronic components, can release harmful substances into the atmosphere that may settle into bodies of water.
Pollution, especially from e-waste, has catastrophic effects on environments when contaminants are introduced at damaging levels. This type of pollution is far more problematic than other forms, due to the combination of toxic chemicals and precious metals in electronic devices. As a result, water contamination remains a critical issue associated with the processing and disposal of e-waste.