Interactivity allows for: a. ___two-way communication between merchant and consumer and enables the merchant to engage a consumer in ways like a face-to-face experience, but on a much more massive, global scale b. ___two-way communication between merchant and consumer and enables the merchant to engage a consumer in ways much different from a face-to-face experience, but on a much more massive, global scale c. ___one-way communication between merchant and consumer and enables the merchant to engage a consumer in ways like a face-to-face experience, but on a much more massive, global scale d. ___two-way communication between employer and employee and enables the employer to engage the employee in ways like a face-to-face experience, but on a much more massive, global scale