"This idea is a couple of decades in gestation," Kristof says. ... The main difference from 19th-century slavery was that all these girls…..
D would be best for his argument. At present, he has a lot of statements, but no sources. While his premises are well grounded and logical, we're still having to take his word for it. Having citations lends credibility to his work.
Answer:
Herr was climbing.. Is the first one. Testing out his new designs is second
Explanation:
What are you trying to find out?