Dred Scott v. Sandford (1857):

A. invalidated the Missouri Compromise.
B. upheld the Wilmot Proviso.
C. declared the “one man, one vote” rule.
D. challenged the right to own slaves.

A?

Nope.

No again.

http://en.wikipedia.org/wiki/Dred_Scott_v._Sandford

so, i feel like Wilmot Proviso?

No, Dred Scott v. Sandford (1857) did not invalidate the Missouri Compromise, uphold the Wilmot Proviso, or declare the "one man, one vote" rule. The correct answer is D. Dred Scott v. Sandford challenged the right to own slaves.

If you were trying to find the correct answer without prior knowledge, you could have taken the following steps:

1. Understand the context: Dred Scott v. Sandford was a landmark Supreme Court case in 1857 that had significant implications for the issue of slavery in the United States.
2. Review the options: A, B, C, and D. It is important to read through all the options carefully to determine which one is most closely related to the case.
3. Eliminate incorrect answers: Based on historical knowledge, you can eliminate options A, B, and C as they do not correspond to the outcome of the case.
4. Analyze the remaining options: Option D, challenged the right to own slaves, aligns with the central issue of the Dred Scott case, which involved the status of enslaved individuals and their rights.

By following these steps, you can identify that the correct answer is D.