In which of the following situations might someone use a combination of WiFi and cellular technology? A real-estate agent takes a photo of a new listing with her tablet and uploads it to a website.

A group of friends takes a selfie with a cell phone and uses the phone to upload the picture to a social media site.

A teacher takes a screen shot of a literary text and shares it with students on a class website.

A man sends a text message to his son reminding him to start a load of laundry after school.