(a) environmentally responsible practices in electronics recycling industry

(b) ecological management of ‘wetlands of International Importance’ under the Ramsar Convention

(c) sustainable practices in the cultivation of agricultural crops in degraded lands

(d) ‘Environmental Impact Assessment’ in the exploitation of natural resources

6. Ans: a

Explanation: 

“Responsible Recycling practices for Use in Accredited Certifications Programs” (R2) Practices: To Recognize the need for comprehensive best-practices to address the operational and environmental challenges in electronics recycling and repair, 

In 2008, the R2 Practices were released and repair and recycling facilities began to get certified.

The original R2 Practices went through its first major revision in 2013 and released a second upgrade, R2v3, in 2020.

Sustainable Electronics Recycling International (SERI) was established as a non-profit organization in 2014 to succeed R2 Solutions with a mission that extends beyond the R2 Standard.

Hence, option a is correct.

Read: Previous Year UPSC Environment Questions (PYQs) With Explanation 2021