Answer:
Mobile devices .
Step-by-step explanation:
For several industry professionals, mobile phones take over as the main communication channel because mobile devices are portable and easy for the purpose of communication or handle. With the help of mobile devices, they can easily interact with their employees, seniors, clients and other persons from which they want to interact or communicate.
- Option A is not true about the scenario because it is not portable and it is not easy to handle as compared to the mobile devices. So, it's not the primary mode of communication.
- Option B is not true about the scenario because it is portable but as compare to the mobile device, mobiles are more flexible, portable for primary communication.
- Option c is not completely true because the professionals give primary preference to the calls than emails.