The USCIS reading test sentences often begin with question words. Which of the following is a question word the test uses?

The USCIS reading vocabulary includes a set of QUESTION WORDS that frequently begin test sentences: Who, What, When, Where, Why, How, and the phrase 'How many.' For example, a reading sentence might be 'When do we vote for President?' or 'Where is the White House?' Recognizing these question words helps the applicant read the sentence correctly and understand it. Words like 'because,' 'quickly,' and 'beautiful' are not on the reading vocabulary list and do not appear as the question words the test uses. Knowing the question words is part of preparing for the reading test.