Answer:
All of the above.
Explanation:
A strong argument must possess all the given characteristics as they all are significant to make it more effective. 'An introduction with a clear thesis to state the claim' would help in clearly signaling the scope, direction, as well the purpose of speaker behind the claim to the audience while 'a clear reason and evidences to back the claim' would not only substantiate the claim but justify the speaker's position(for the argument) as well. 'An appropriate response to the counterclaim' would help establish the credibility of the argument and 'a conclusion that reinforces the speaker's claim' would do it all at last to strengthen the claim into the mind of the audience constructively. Thus, all the given options are correct.
