Critical Reasoning: Conclusion Weakening Questions

To which Critical Reasoning question type does the following question stem belong?

"Which of the following, if true, calls into question the above conclusion?"

Very good!

Incorrect. The question stem of Inference questions usually includes the word inference, conclusion or a similar word.

Incorrect. The question stem of Assumption questions usually includes the word assumption or a similar word.

Incorrect. The question stem of Conclusion Strengthening questions usually includes the word strengthen or support.