Which statement best describes the discovery about e-waste processing?

• A. An intentional development to destroy e-waste
• B. A chance discovery revealed a process to recover precious metals from e-waste
• C. A breakthrough in plastic recycling
• D. A new method for cement production

Answer: (B)

The main idea here is that a discovery in e-waste processing came about by chance and revealed a way to recover valuable metals from discarded electronics. This aligns with how some important innovations emerge—unexpected observations leading to practical methods for reclaiming precious metals like gold or palladium from e-waste, which supports sustainability and the circular economy. The other statements describe deliberate aims (destroying e-waste) or are about unrelated topics (plastic recycling, cement production), so they don’t fit the scenario of a serendipitous finding about extracting metals from e-waste.