I'm pretty sure she's answered the question every single time. She starts framing the question about how she intended to anchor her economics on boosting the middle class. She starts repeating the thing about being middle class, for the people listening that are slow and need to have things repeated and simplified.
Clearly, even her trying her best to make it simple for the simpletons wasn't enough, when some of them think she's not answering the questions. The same people then turn around and say the guy that speaks about sharks and batteries and rambles about crowd sizes and hating immigrants is for sure an economics genius that always answers the questions. What a time to be alive.