Answer:
they work together in cross-functional teams and need to understand how members of their teams think
Explanation:
Communication skills are important to everyone, we live in a society and eventually we will need to communicate with someone else.
If you are a manager, good communication skills are not only important, they are essential for you. A manager manages a group of employees, can be a large or small group, and he/she needs to understand how the employees think and why they act as they do.
Here is an extreme example of how important communication skills are; People who suffer from autism are super smart, much much much smarter than ordinary people, but since they cannot communicate well with others, they will never be good managers, no matter how smart they are.