Answer:
The best option as a synonym for fidelity is:
B. loyalty
Step-by-step explanation:
When we look up the meaning of fidelity, we find its definition refers to the quality one has to stay faithful and loyal to a person, a belief, or a cause. Fidelity is, thus, synonyms with loyalty, faithfulness, and even obedience. Among the options given in the question, the one that clearly substitutes fidelity in the sentence is B. loyalty. The other options refer to qualities or actions that may result from being loyal, but they do not function as synonyms for fidelity.