The correct answer is (D) Loyalty; faithfulness; faithful performance of duty; loyalty; adherence to facts, truth. Strict observance of one's promises. Also, conjugal faithfulness.

Fidelity comes from French fidelite, Latin fidelitatem.(fidelis [faithful]).

Examples of use:

• Fidelity to one's employer is much appreciated trait on most jobs.
• She translated the author's work with great fidelity.