Final answer:
The projected increase in homeownership rates was estimated to be one fifth (20%) of the 10 million additional homeowners by 2013.
Step-by-step explanation:
The question is asking for the percentage of the projected 10 million additional homeowners by 2013 that would be minorities. To find the answer, we need to understand the context of the question. According to the information provided, the homeownership rates in the United States grew from 64% to over 69% between 2004 and 2005. This indicates a growth of approximately 5%. Assuming that the projected 10 million additional homeowners are distributed proportionally to the overall homeownership rate, we can estimate that roughly one fifth (20%) of that number would be minorities.
Therefore, the correct answer is a) One fifth.
(Source: Bring it Home: From Housing Bubble to Housing Bust)