Which characteristic of non-sediment Terry rocks would provide the least evidence about the environment in which the rocks were formed?

The characteristic of non-sedimentary rocks that would provide the least evidence about the environment of formation is their mineral composition. While mineral types can indicate certain conditions, they often do not provide specific information about the environmental factors such as temperature, pressure, or the presence of water. Other characteristics, such as texture, structure, or fossil content, can offer more direct insights into the conditions under which the rock was formed.