The correct answer is A. Faithfulness.
Fidelity is the quality of being loyal or constant in one’s affections. It is often used in the context of romantic relationships, but it can also apply to other relationships, such as friendships, family ties, and religious beliefs.
Resourcefulness is the ability to find quick and clever solutions to problems. It is often associated with intelligence and creativity.
Strength is the quality of being physically or mentally strong. It is often associated with power, endurance, and courage.
Weakness is the quality of being physically or mentally weak. It is often associated with frailty, vulnerability, and timidity.
In the context of the question, fidelity is the most appropriate answer because it is the quality that is most closely associated with the concept of being loyal or constant in one’s affections. The other options, resourcefulness, strength, and weakness, are not as closely associated with this concept.