Marie is a scientist, and she understand that knowledge changes in the face of new evidence. Marie is demonstrating a core attitude in science, which is objectivity.
Explanation:
Objectivity refers to the aspiration of science to correspond to the object it investigates, through procedures collectively accepted by scientists and on condition of avoiding the influence of subjective factors. Objectivity allows the presentation of knowledge in a neutral way, therefore, it is an essential characteristic of all the contents that expose the results of a research or scientific analysis that seeks to provide information, that is, objectivity is, together with rationality and methodical character, one of the main characteristics of science or scientific knowledge.