Unlike many of his schoolmates, mason does not own a laptop or home computer. he is a victim of a term that describes the fact that poorer adolescents and some minority groups have less access to computers than more affluent groups.

The digital divide

Explanation:

When there is an inequality of access to Information and Communication Technologies (ICT) among different people in a society it is known as a digital divide. In other words it is the gap among individuals or groups in terms of access to ICT.

The digital divide was much higher a decade back but now with mobile phones becoming cheaper the divide is reducing.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer