Answer the following question in 3-4 complete sentences. Explain Elmer Jamison's contribution to the development of Native American codes.
Options:
A. Jamison developed a code language; he had no contribution.
B. He played a key role in creating the Navajo Code; his contribution is significant.
C. Jamison focused on Native American art; his role in codes is minimal.
D. Jamison's work was unrelated to codes; his contribution is exaggerated.
