Final answer:
Maria used the principle of Veracity to decide against using the data from an unverifiable source, ensuring the trustworthiness of the information in her work.
Step-by-step explanation:
Maria decided not to use the data found in the report because she couldn't verify the source. The aspect of the Four Vs that helped Maria make this decision is C) Veracity. Veracity refers to the trustworthiness or credibility of the data. Since Maria could not confirm the reliability of the data's source, she rightly questioned its veracity, which is a critical part of assessing information before using it in any work or decision-making process. Identifying trustworthy sources and ensuring that information is accurate is crucial for maintaining the quality and integrity of any research or report.