I believe you are correct. The answer is A) the 38th parallel.
Hope this can help.
The hope that Johnson have in accomplishing in which he
enacts a harsher plan was because he hopes to avoid secession that may happen
in the future in which, there might be a presence of withdrawal of membership
of which he does not want to happen.
Should be the second answer (b)
When Cromwell said that the death of the king was a “cruel necessity” it can be inferred that he thought true freedom and change was not possible without violence.