Answer:
How
Step-by-step explanation:
Who, what, when, where, why, and how are the 5H+H questions. These words are termed to be interrogative words. They are used in the sentences to ask questions about the basic information. These interrogative words help in gathering information and basic answers to the questions. In the given sentence, the statistic answer is '150 miles per hour'. To get this answer, the 5W+H question that will be used will be 'how'.