Some smartphones support a(n) keyboard app, on which users enter words by tracing a path on an on-screen keyboard.

The answer is "Swipe".

Explanation:

In the given question option is missing, which can be described as follows:

A) virtual

B) touch

C) finger

D) swipe

The swipe is a technology, that is only available on the touch-screen smartphone or other devices. It enables you to move anywhere on the screen. It uses when your phone key is locked, and certain alternative is not correct, which can be described as follows:

b. xor is the correct answer

given the lack of choices, i'm gonna wing it and say that pushing your car off a cliff might not be the best idea. your car might sustain damage from the fall and will probably result in the car being too damaged to jump start.

if that's not good enough, avoid filling the car with bees. bees might get agitated when trapped or during the moving process, and might result in death or painful stings that will make jump starting your car very difficult. but in the event that you do choose to fill your car with bees, remember to wear protective gear!