Final answer:
The Civil War had a significant impact on the lives and work of plantation slaves, with many gaining freedom and finding new opportunities. Option B is correct.
Step-by-step explanation:
The Civil War had a significant impact on the lives and work of plantation slaves. The correct answer to the question is B) Many slaves gained freedom and found new opportunities.
The war led to the emancipation of enslaved blacks, resulting in many slaves gaining their freedom. Some slaves took advantage of this opportunity to escape slavery and start new lives. Others joined the Union army as soldiers or worked in various roles that supported Union forces.
While some slaves were used in manual labor jobs that supported the Confederate army, the primary effect of the war on plantation slaves was their pathway to freedom.