In this task you're given a question and you have to paraphrase the question to create the output question while retaining the meaning of the original question.
One example: What can one do after MBBS?
Solution is here: What do i do after my MBBS ?
Explanation: In this example both the question ask the same thing about what to do after MBBS hence second question is the correct output 

Now, solve this: What does the phrase 'double down' mean in the sentence that goes"Donald Trump doubled down on this position at the CNN town hall"?
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
How can we work to make sure Donald Trump loses the election for president of the United States?