Why did optimus prime choose smokescreen as the new prime?

Optimus Prime chose Smokescreen as the new Prime due to his bravery, unwavering spirit, and potential for leadership. Smokescreen demonstrated a strong sense of duty and a willingness to stand up for others, qualities that are essential for a Prime. Additionally, Optimus saw in him the ability to inspire hope and unite their allies in the ongoing battle against evil. This decision reflects Optimus's belief in the next generation of Autobots and the importance of passing on the mantle of leadership.