Question

progress: the movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answer. which of the following best replaces the word integral in paragraph 1? obvious attractive undivided essential reading passage cell phones: classroom technology of the future 1 the cell phone. no longer a device just to make telephone calls, cell phones can now be used to take pictures and record video, send text messages and tweets, and access the internet. using a smartphone, you can receive and send email, get directions, play games, listen to music, and watch movies. you can now speak to your cell phone and it will answer back. ask it a question and it can tell you the answer. at some stores, customers can pay using their cell phones. the cell phone has become a handheld computer—an integral part of day - to - day technology. the question, therefore, inevitably arises: is it appropriate for students to use cell phones in schools? some schools have adopted policies to ban cell phone use in the classroom, but are these initiatives reasonable? although they have limitations, cell phones can

Explanation:

In the context, "integral" means something that is an essential or necessary part of day - to - day technology. "Essential" has a similar meaning, referring to something that is fundamental and necessary. The other options "obvious", "attractive", and "undivided" do not convey the same sense of necessity as "essential" does in this context.

Answer:

D. essential