Question

select all of the methods used to determine the age of fossils. comparing to the age of surrounding plant life referencing records of prehistoric humans in the region dating relative to surrounding rock layers conducting radiometric dating

Explanation:

• Comparing to the age of surrounding plant life is not a standard method for fossil dating.
• Referencing records of prehistoric humans in the region is not relevant as fossils can be much older than human records.
• Dating relative to surrounding rock layers (stratigraphy) is a valid method.
• Conducting radiometric dating (using radioactive isotopes) is a valid method.

Answer:

C. dating relative to surrounding rock layers, D. conducting radiometric dating