What transition would best connect these ideas?

many americans thought trains too dangerous, even banning them from use. americans were building more railroad miles than canals in the 1830s.

however
undeniably
as a result
for example

Which of these best explains why the argument in this passage is weak? (5 points) the argument doesn't take into account opposing points of view. the argument relies on attacking a weak version of the opposition. the claim is not valid. the argument relies on claims that are not backed up by facts.