What is the main reason for the Product Owner to be part of the Daily Scrum?

What is the main reason for the Product Owner to be part of the Daily Scrum?
A . It is not required for the Product Owner to participate.
B. To assign the Developers the daily tasks.
C. To track the progress of the Project.

Answer: A

Explanation:

The Developers are self-organized – no one assigns tasks to them. The Product Owner does not need to be part of the Daily Scrum (it is a Scrum Event for the Developers).