Answer :
Answer: b) Digital divide
Explanation: Digital divide is the distribution of access amongst people in unequal amount in relation with internet and other communication facilities. Some people receive more internet access and some have low internet access on basis of geographical level, social level, etc
According to the question, Caleb has more preparations for doing the course work as he has received more access of iPhone and laptop in school as compared to Ted. Thus, he can easily deal with computer system for doing the work but in Ted's case due to low access, he is not much familiar with the internet and communication concept.
Other options are incorrect because computer lag is lagging computer system in terms of working and processing. Technological pause and new media are not responsible for digital split.
Thus, the correct option is option(b).