With set of sensors and app children can do

The correct answer is: A. feed

With a set of sensors and app, children can feed their virtual pets. The sensors can track the pet’s hunger level, and the app can be used to give the pet food. This can help children learn about responsibility and caring for others.

The other options are incorrect because they are not things that children can do with a set of sensors and app. Option B, bathe, is incorrect because there is no way to bathe a virtual pet. Option C, hatch, is incorrect because virtual pets are not hatched. Option D, feed, bathe and hatch, is incorrect because it includes two incorrect options.