Aus Financial is a financial services provider who also offers car insurance. Whenever a customer has a child who is about to become eligible for a driver's license, the company sends the customer materials related to teaching teenagers how to drive safely. This is an example of using digital customer information to $\_\_\_\_\_\_\_\_.$

a$.$

Find new customers

b$.$

Advertise the company

c$.$

Engage with carefully targeted customers

d$.$

Sell insurance

e$.$

Customer Relationship Development $($CRD$)$