Based on the context of each sentence, choose the word that most closely matches the denotation of the underlined word.
The businessman was a parsimonious person, who could not bear to part with even a single dollar.
The children obstinately refused to leave the playground.
Her resolution to win the contest at any cost could not be swayed.
His avaricious nature led him to make many choices in the pursuit of money.
stubbornness