Select the most appropriate synonym of the underlined word.
The outcome document of the Rio+20 Conference, the Future We Want, underscores climate change as "an inevitable and urgent global challenge with long-term implications for the sustainable development of all countries". Through the document, Member States express their concern about the continuous rising of emissions of greenhouse gases and the vulnerability of all countries, particularly developing countries, to the adverse impacts of climate change
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Correct answer: B
Explanation
The correct answer is option 2 i.e. undeniable.
"Undeniable" is a suitable synonym for "inevitable" in this context.
Both words convey a sense of something that cannot be avoided or denied.