Explanation:

- I am quite satisfied that I have not been negligent in doing whatever was needful for building up their character.

- Negligent means failing to take proper care in doing something. If you are satisfied that you have not been negligent, it means you believe you have been attentive and responsible.

- Correct Answer: This suggests you were not careless, implying diligence.

- I am quite satisfied that I have not been devoted in doing whatever was needful for building up their character.

- Devoted means being very loving or loyal. Here, it suggests a contradiction since satisfaction implies no lack of effort.

- I am quite satisfied that I have not been caring in doing whatever was needful for building up their character.

- Caring involves being kind and concerned, which doesn't fit because satisfaction implies a positive assessment, not a lack of care.

- I am quite satisfied that I have not been affectionate in doing whatever was needful for building up their character.

- Affectionate refers to showing fondness, which, again, would mean a positive emotion. It seems opposite to the context when someone feels satisfied about effort.