Which of the following lines from king's letter is meant to be interpreted literally?

there comes a time when the cup of endurance runs over
we have gone through all of these steps in birmingham
in those days the church was not merely a thermometer
it was a thermostat that transformed the mores of society.

i am not sure if this is the correct story but i think the answerr is when twain's confidence when he asked twin a question

explanation:

b. and i with my fighting heart, i thought at

first / to steal up to him [the cyclops].   the cyclops’ actions first odysseus to take

action after killing his men and trapping in the cave revealed his intent of

doing them harm.   that is why odysseus

blinded him to enable him and his men to escape.