Which of the following is an example of the IoT?

Select answer from the options below

Courtney is able to stream an audio book and check her e$-$mail while riding the train to work.

Katy has an implanted sensor that causes a pump to release insulin when her levels are low.

Jennifer has a phone that provides her with a permanent Wi$-$Fi hotspot.

Christopher is able to stream movies directly from his computer to his TV$.$