What dating technique would yield a result that might read 2.25 million years before present plus or minus 50000 years?

The dating technique that would yield a result of approximately 2.25 million years before present, plus or minus 50,000 years, is typically potassium-argon (K-Ar) dating. This radiometric dating method is used to determine the age of volcanic rocks and ash layers, which can encapsulate fossils or artifacts. K-Ar dating is particularly useful for dating geological formations and events from the late Cenozoic era, making it suitable for dating early hominid sites or ancient geological materials.