Excerpt from Red Cloud Part A
Charles A. Eastman

(2) This powerful tribe then roamed over the whole extent of the Mississippi valley, between that river and the Rockies.
Read the passage. Look at the underlined sections marked number (2). There may be a mistake in the way the sentence is written. If you find a mistake, choose the answer that corrects the mistake. If there is no mistake, choose ‘Correct as is.’
A) Correct as is
B) This powerful tribe then roams over the whole extent of the Mississippi valley, between that river and the Rockies.
C) This powerful tribe then roam over the whole extent of the Mississippi valley, between that river and the Rockies.
D) This powerful tribe then did roam over the whole extent of the Mississippi valley, between that river and the Rockies.