Question

which of the following best replaces the word integral in paragraph 1?

• essential
• obvious
• undivided
• attractive

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 be used to ensure student safety, help with job skill preparation, and aid

Explanation:

To solve this, we analyze the context of "integral" in the passage. The passage describes the cell phone as a handheld computer and an "integral part of day - to - day technology". We need to find a word with a similar meaning.

• "Essential" means something that is very important or necessary. In the context, the cell phone is a necessary part of daily technology, so this word fits.
• "Obvious" means something that is easy to see or understand. The passage is not talking about the cell phone being easy to see as a part of technology, so this is incorrect.
• "Undivided" means not separated or shared. This has nothing to do with the cell phone's role in daily technology, so it's wrong.
• "Attractive" means pleasing or appealing. The passage is not about the cell phone being appealing as a part of technology, so this is also incorrect.

Answer:

A. essential