I think the answer is B, that one makes the most sense to me.
<span>Which amendment banned suffrage restrictions based on race?
The 15th one</span>
The correct answer is <span>Federal agencies purchase inventors’ new inventions
Federal agencies due fund university research which helps many universities discover new things on a daily basis. They also enable copyrights in order to protect the rights of those who discover things and enables them to earn money. It also has its own research institutions where people are motivated to help their country by creating new things.</span>