The correct answer is 'imperishable' because 'imputrescible' is a technical term meaning 'not liable to rot or decay' - literally 'cannot become putrid'. The prefix 'im-' means 'not', 'putresc' relates to rotting, and '-ible' means 'capable of'. 'General', 'evaluate', and 'introduce' share no etymological or semantic connection with the concept of imperishability.