Which of the following signifies loyalty and faithfulness in the Marine Corps motto?

The phrase "Semper Fidelis," which translates to "Always Faithful," is the official motto of the United States Marine Corps. It embodies the core values of loyalty and faithfulness not only to the Marine Corps but also to fellow Marines and the nation. This motto underscores the importance of commitment, trustworthiness, and dependability, qualities that are essential for a Marine in both training and operational settings.

The other phrases present in the options carry different meanings. "Semper Paratus" translates to "Always Ready," and is associated with the Coast Guard, emphasizing readiness for any situation. "Semper Veritas," meaning "Always Truthful," focuses on the value of truthfulness but does not encompass the element of loyalty. "Semper Fortis," meaning "Always Strong," relates to resilience and strength but lacks the specific emphasis on faithfulness that defines the Marine Corps' ethos. Thus, "Semper Fidelis" is the correct representation of loyalty and faithfulness within the context of the Marine Corps motto.