Most of us use roadblocks from time to time. some common mistakes we make might include:
choose one answer.
a. not asking for clarification when you know you don't understand what is being said.
b. smiling even though you are really upset.
c. assuming you know what is going to be said.
d. all of the above.

The best and most correct answer among the choices provided by your question is the fourth choice or letter D.

All of the given choices are common mistakes we make might include on the use of roadblocks.

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Idk the answer there making me do this