Southerners hated the Underground Railroad and demanded a stronger federal Fugitive Slave Law especially because
a. the numbers of runaway slaves had grown dramatically.
b. they feared that railroad conductors might foment a slave rebellion.
c. northern toleration of slave runaways reflected a moral judgment against slavery.
d. southern states were forced to spend large sums on slave patrols and slave catchers.
e. the risk of un-captured runaways was beginning to depress the price of slaves.
Answer: C