A company that produces blood glucose meters created an online forum where people can interact and ask questions about the company$$s products. Luciana loves to participate in online forums and is a long$-$time user of the company$$s products, so she joins and often reads and comments on other people$$s posts. This ability Luciana has to communicate with other consumers and the company through this online forum is an example of what characteristic?

Control

Relationship marketing

Accessibility

Addressability

Connectivity