how did the speaker prove her argument

The speaker proved her argument by explaining her research about a particular topic, citing credible sources and data to back up her claims. This approach demonstrates she took the time to gather evidence and present it in a way that supports her point persuasively. She likely used a combination of logical reasons, evidence such as statistics or expert testimony, and perhaps illustrative examples or stories to make her case believable and convincing to the audience. This method enhances her credibility and effectiveness in persuading the listeners.