Answer:
The line that would indicate the passwords are there is given as Kolton:34uyx:431:0:Back Door:/root/bin/bash
Explanation:
The options are not given here. The options given were
1) kolton:34uyx:431:0:Back Door:/root:/bin/bash
2) adam:x:341:52:Adam Fox:/users/adam:/bin/bash
3) clifford:x:687:301:non secure user:/root:
4) eddie:x:100:100:://users/eddie:
Out of these
option 2 is not correct as the location of bin is not i the users, it is in the root.
option 3 is not correct as the users does not contain the root directory. It is other way around
option 4 is not correct as this not the appropriate way to address the directory in the Linux.