The correct answer is D) men of low-income families often could not defer the draft.
Many Americans considered the draft to be unfair because men of low-income families often could not defer the draft.
In the case of the Vietnam War, barely two-thirds of the troops were volunteered. The rest were selected through the draft. Most of the men drafted for the war were from poor families and working-class families. Historians considered that almost 25 percent of members of the U.S. troops in Vietnam came from poor families, 55 percent form working-class families, and 20 percent from the middle class. Very few people enlisted form high class. That is why many Americans considered the draft to be unfair because men of low-income families often could not defer the draft.