Final answer:
The answer to the question is true. Trump did brag about the size of the crowd at his rally in Hialeah, Florida, despite videos showing empty seats.
Step-by-step explanation:
The answer to the question is a) True. Trump did brag about the size of the crowd at his rally in Hialeah, Florida, despite videos showing empty seats. This incident happened during his presidency when he often made claims about the attendance at his rallies that were not backed up by evidence or contradicted by visual proof.