Answer:
That quarter of a minute, as soon as you open your mouth, can make or break your whole presentation. "What keeps people listening and engaged is curiosity about what's coming next, and that suspense is at its peak right at the start," Gordon explains. "It can be a powerful tool.
For more explanation u can go to this website! Hope this could help
https://fortune.com/2019/10/16/giving-a-speech-advice-tips/