How did the underground railroad work?
a. there were a couple of set routes with regular paths
b. slaves hid and slept during the day and traveled at night
c. safe places to hide and sleep were called stations
d. all of the above
e. none of the above

Which of the following statements most accurately describes the requirement for the documentation of minors’ assent to participate in research? parents must approve written documentation.documentation is required unless waived by an irb.to protect minors documentation is always required.federal regulations do not require the documentation of minors’ assent.