First of all let's make it clearer, what is meant by "domain name resolution"?
"Domain name resolution" is the process of translating your web address into its corresponding IP address. e.g. translating (www.brainly.com to 104.16.32.180)
Computers cannot understand the human language they only can understand numbers that's why we need this process.
So, the process (in a very simple way) is divided into four steps:
1) Lookup "root nameservers"
2) Lookup "Top Level Domain TDL nameservers"
3) Lookup "domain nameservers"
4) Lookup "subdomain nameservers" [if exist]
If you still confused please check out this video https://www.youtube.com/watch?v=BCjUbpIzRs8&index=10&list=PL4bq-KmCeyBmMvBB3-RT6ikdp8ljV9GeT
A. modem or d. voice input. Not a port because a port allows one to insert a peripheral device but not really communicate. I have no idea what an expansion slot is. It could be d. voice input because this allows a person to hold an audible conversation.
But I'd go for modem because a modem lets you connect devices like laptops, tablets, phones, computers etc. and share data between them. So things like mailing are possible (I THINK)! <span />
Answer:
it means that they can charge companies to come mine it making them more wealthy they can also upscale the materials needed to make it as they are the only countries that sell it so they have no one to compete with