challenge an assumption

Translations
оспаривать предположение
He decided to challenge the assumption that the project was impossible.
Он решил оспаривать предположение, что проект был невозможен.
Definitions
To question or dispute a belief or idea that is taken for granted, often in order to explore its validity or to encourage critical thinking.
Words
challenge

verb
оспаривать
an

article or possessive pronoun
неопределённый артикль
assumption

noun
предположение