Explanation:

- Option 1: International Telecommunication Union (ITU)

- The ITU is a UN specialized agency responsible for issues related to information and communication technologies.

- It is one of the organizations involved in publishing the Global E-Waste Monitor report.

- Option 2: United Nations University (UNU)

- The UNU is a global think tank and postgraduate teaching organization headquartered in Japan.

- It collaborates with other institutions to publish the Global E-Waste Monitor.

- Option 3: International Solid Waste Association (ISWA)

- ISWA is an international, independent, and non-profit making association in the field of waste management.

- It is part of the group that contributes to the Global E-Waste Monitor report.

- Option 4: All of the above institutions together publish the report

- Correct Answer: All three organizations, ITU, UNU, and ISWA, collectively publish the Global E-Waste Monitor report to provide comprehensive insights on electronic waste globally.