What is the definition of macroscopic evidence?

Macroscopic evidence is indeed defined as evidence that is visible to the naked eye. This type of evidence can include a variety of physical items found at a crime scene, such as bloodstains, footprints, tire tracks, or other observable characteristics that can provide critical information in an investigation. Because it is detectable without the use of magnification or specialized tools, macroscopic evidence is often the first type of evidence processed at a crime scene.

Other options reflect aspects of evidence but do not align with the definitions of macroscopic evidence. For instance, being invisible to the naked eye pertains to microscopic evidence, which requires magnification for observation. Marks or signs related to a crime could refer to any evidence type and lacks specificity. A two-dimensional overhead view of a crime scene is related to the documentation of a scene but does not define what macroscopic evidence is. Thus, the definition of macroscopic evidence is best captured by describing it as visible to the naked eye.