Which of the following is true of stingray?

a. It supports operations that require aerial surveillance.
b. It is a national security agency surveillance program that collects Internet data including search histories.
c. It impersonates a cell tower and forces all mobile phones within range to connect to it.
d. It is an airline passenger prescreening program that checks travelers’ personal information.

c. It impersonates a cell tower and forces all mobile phones within range to connect to it.
Stingray is a type of hardware device used to impersonate a cell tower, forcing all mobile phones within range to connect to it. The device can then capture information that can be used to identify and locate users and the phone numbers they call or text.