The correct answer for the question that is being presented above is this one:
(1) he upheld the general use of nonviolent civil disobeyed against unjust laws and
(2) saying human rights must take precedence over such laws. If King admits that breaking laws in order to change them is "a legitimate concern,"
Then here are the two reasons for his defense of civil disobedience (1) he upheld the general use of nonviolent civil disobeyed against unjust laws and (2) saying human rights must take precedence over such laws.