What adjective describes Sam's character: "Oh, yes! He's a very _____ person."?

The choice of "sensible" as the adjective to describe Sam's character suggests that he is practical, reasonable, and wise in his decisions and actions. It conveys that he thinks carefully before he acts, ensuring that his choices are sound and well-considered. This quality often imbues a sense of trustworthiness and reliability, which can be important traits in various situations, such as in personal relationships or professional settings.

While "carefree" might indicate someone who is lighthearted and untroubled, it does not capture the idea of being thoughtful or cautious. Similarly, "reckless" implies a lack of consideration for the consequences of one's actions, highlighting a more impulsive approach, which contrasts directly with the notion of sensibility. "Confident," while suggesting self-assurance, does not inherently convey the practical decision-making aspect associated with being sensible. Therefore, "sensible" not only accurately describes a character trait that emphasizes reason and thoughtfulness but also aligns best with the context of being a reliable and grounded individual.