The additional piece of evidence that is needed to create a COMPLETE argument that understanding when Ragnarok was written helps archaeologists better understand Viking life is option A Based on the form of the words, paleo linguists believe that this famous poem predates the Viking era by two to three centuries, and may have been written as early as the sixth century
An evidence has to do with proof that validates a claim. It is especially useful to show that a statement is true and accurate.
Ragnarok has to do with Vikings and Norse mythology which has to do with scandinavian pirates and their way of living, culture and many other things.
Therefore,the piece of evidence that would show why understanding when Ragnarok was written will help understand Viking life is option A.
Read more here:
https://brainly.com/question/24361702