The process of listening usually involves multiple stages that allow the listener to understand properly the message delivered by the speaker and respond to it. This states include receiving in which the listener focus on hearing the message and isolated it from other noises; understanding in which the listener tries to understand the meaning of the message; remembering which is about connecting new ideas listened to previous ideas by using memory actively; evaluating which usually takes place after listening the message is about judging the process of listening by determining if you understood properly the message and asking questions to the speaker and the final stage responding which is about providing feedback to the speaker. Considering this, the stage of listening process in which you determine how well you understood a speech is the evaluation as in this stage you evaluate your own process of understanding and ask questions to clarify your understanding if necessary.
I think the answer is 'B' because even though it is the Declaration of Independence it should still be flexible for everyone not just a few certain people.