Disposal of e-waste releases_________ into air.Select one:a.lead, cadmium and mercuryb.pure oxygenc.Both A and Bd.None of These

Break Down the Problem

1. Identify the primary focus of the question: the types of substances released into the air from the disposal of e-waste.
2. Evaluate the provided options for accuracy and relevance regarding e-waste disposal.

Relevant Concepts

• E-waste is electronic waste that can release toxic substances when disposed of improperly.
• Common harmful substances released from e-waste include lead, cadmium, and mercury.

Analysis and Detail

1. Option A: Lead, cadmium, and mercury are all known harmful substances associated with e-waste. They pose serious environmental and health risks when released into the air.
2. Option B: "Pure oxygen" is not a substance typically released from e-waste disposal.
3. Option C: "Both A and B" cannot be correct because while option A has valid points, option B does not.
4. Option D: "None of These" is incorrect, as option A contains valid substances released during e-waste disposal.

Verify and Summarize

• Upon reviewing all answer choices, it is clear that the only option that accurately reflects harmful emissions from e-waste disposal is option A.

Final Answer

The correct answer is a. lead, cadmium and mercury.