B) Dred Scott
Hopefully this helped you out
<span>The laws passed by southern states to prevent african americans from owning land was the reconstruction acts of 1867. The Reconstruction Acts of 1867 laid out the process for readmitting Southern states into the Union.</span>
Answer:
Explanation:
Remark
Let's look at the two that you can eliminate without much worry. B and C are not going to say much about ecofriendly technologies.
It's between the New Science Lab and A record of Operational Data. The Operational Data might given you a hint about the need to reduce costs, but it won't say much about how to do it.
I would pick D. The science lab has the best chance of employing alternate ways of looking for cost control using ecofriendly technologies. It is a lab after all, and that is the first place one should seek the most modern ideas.
They were wlected by the people and for the people