Final answer:
Aerial images are a true and significant tool for revealing the presence of archaeological sites, by showing soil colour variations, vegetation patterns, and changes in topography related to human activities detectable from above.
Step-by-step explanation:
The statement that aerial images reveal the presence of archaeological sites can be considered true. Archaeologists use various technologies, including high-resolution aerial photography, satellite imagery, and drones to detect and document features of the landscape that indicate human activity, such as building foundations, walls, roads, and other structures. The images can show differences in soil colour and vegetation patterns that are not easily visible from the ground. The presence of adobe structures, kivas (ceremonial rooms), and I-shaped ball courts can sometimes be discerned through changes in the topography or landscape. Specific features such as the large circular configurations at sites like Göbekli Tepe or the built structures visible at Knossos are examples of archaeological sites detectable from the air.