Competence, self-discipline, thoughtfulness and achievement-striving define which factor?

1. Each Big Five factor is defined by a cluster of facets. 2. Conscientiousness is characterized by competence and self-discipline. 3. It also involves thoughtfulness and achievement-striving, meaning goal-directed behavior. 4. Extroversion is instead characterized by sociability and assertiveness. 5. So the achievement-striving cluster identifies conscientiousness. _Source: OpenStax Psychology 2e (CC BY 4.0), Ch 11 'Personality', sections 11.1-11.9_