The example portrays the relation where 'unyielding' means 'stubborn or not giving in' affiliating to effort and proposes the collective meaning 'a stubborn effort'. Similarly, 'charitable' supplies the meaning 'pertaining to charity' which affiliates to 'organization' and offers a combined sense of 'a charitable organization'. Thus, the adjectives after being affiliated to the nouns comprehend the meaning. Therefore, as the unyielding is to effort similarly, charitable is to the organization. Hence, option B is the answer.