Passage Summary: A couple keeps getting phone calls for a stranger; even though they didn't promise to help her, it would be a nice, easy thing to do if they gave callers her actual number.

Conclusion: While the Jacksons aren't obligated to provide Sara's correct number, doing so would be a praiseworthy act.

Reasoning: Providing the number is easy for the Jacksons and beneficial for Sara, even though no prior commitment to help was made.

Analysis: We are looking for a moral principle that distinguishes between required actions and praiseworthy actions. The argument relies on the idea that an action can be good to do without being a strict duty. Look for a principle that suggests helpful, low-effort actions are commendable even in the absence of a formal obligation or promise.