Excerpt from cherokee indian ancestry
us dept. of the interior

(3) this is primarily because the federal government has never maintained a list of all the persons of cherokee indian descent indicating their tribal affiliation degree of indian blood or other data.

which is the best revision of sentence (3) in paragraph 7? select "no change" if the current version is best.

a)
no change

b)
this is primarily because the federal government has never maintained a list of all the persons of cherokee indian descent, indicating their tribal affiliation degree of indian blood or other data.

c)
this is primarily because the federal government has never maintained a list of all the persons of cherokee indian descent indicating their tribal affiliation, degree of indian blood, or other data.

d)
this is primarily because the federal government has never maintained a list of all the persons of cherokee indian descent, indicating their tribal affiliation, degree of indian blood, or other data.