Puerile and mature are the opposite of each other. Therefore, it can't be a because fraternal basically means brotherly. It isn't b because uxorious means that a man is submissive to his wife. Masculine means you are manly. Innate and essential means important. Familial and marriageable both are relating to family. So the answer is D. Moribund means close to death. Lively is, well you know, full of life. The answer is D.
