Final answer:
The term that is synonymous with 'unity' in the context of singleness or integrity is 'unanimity'. Congruence is the harmony between one's beliefs and actions. Pluralism describes the coexistence of diverse cultures, and the principle of good continuation explains how our minds perceive patterns in disjointed lines.
Step-by-step explanation:
The term is synonymous with "unity" in the context of singleness or integrity is unanimity (c). The options provided lead us to define different aspects of uniform action or agreement. While consistency relates to the maintenance of a certain standard over time, singularity points to the quality of being one of a kind. Uniformity involves uniformity in form or character, whereas unanimity is the condition of being united in opinion or action, closely aligning with the context of unity.