Promising work but not doing it shows lack of which quality?

Correct answer: Reliability

Reliability means that people can trust a person to do what they have promised and to complete responsibilities on time or communicate honestly when a difficulty arises. At a workplace, promises create expectations among colleagues, supervisors, and clients. Repeatedly promising work but not doing it makes planning difficult and reduces confidence in that employee. Reliability therefore includes dependability, responsibility, and keeping commitments.

Option D is correct because failing to complete a promise directly shows that others cannot depend on the person. Leadership, communication, and creativity may also matter at work, but none describes this specific behaviour as precisely as reliability. A reliable worker does not merely speak confidently; the worker follows through. Thus, the broken commitment is evidence of a lack of reliability.