The company is expressing its key corporate value with a slogan.
Step-by-step explanation:
Option 1: This is the right answer. Slogan is the best possible and smart way to attract the customer and make the customer to understand about the organization ethics and what the customer can benefit out of the organization.
Option 2:
This is invalid because a company should more focus on employee than itself.
Option 3:
Employees are really important to the organization but customer bring business where employee and the organization gets benefited. So keep slogan based on customer is better than to appreciate only employees.
Option 4:
This is also invalid.