The question pertains to identifying which term became widely known and accepted following the publication of the 'Our Common Future' report, also known as the Brundtland Commission Report. Let's delve into the options:

1. Right to development: This concept pertains to human rights, focusing on the economic, social, and cultural rights of individuals and nations. It emphasizes that all people should have the ability to participate in, contribute to, and enjoy economic, social, cultural, and political development. While important, this was not the term popularized by the Brundtland Commission.
2. Sustainable development: This is the correct answer. The Brundtland Commission Report, published in 1987, introduced and popularized the term "sustainable development." It defines sustainable development as "development that meets the needs of the present without compromising the ability of future generations to meet their own needs." The report laid the groundwork for integrating environmental considerations with economic development agendas.
3. Genocide: This is a term used in international law to describe acts committed with intent to destroy, in whole or in part, a national, ethnical, racial, or religious group. This concept was already well-established before the Brundtland Commission report and is unrelated to the primary focus of that document.
4. Euthanasia: This refers to the practice of intentionally ending a life to relieve pain and suffering. It is unrelated to the Brundtland Commission's work and focus on environmental sustainability.

Thus, the correct answer is Sustainable development. The Brundtland Commission report brought global attention to how social, economic, and environmental dimensions interact, encouraging nations to build policies around sustainability.