The answer is A.
Hey just a word of advice I hope you find someone lovely and someone who’ll enjoy you for you. Don’t look for people on apps like this I made many mistakes and it’s not smart. Have a good day. I get the feeling of loneliness and it sucks
The most appropriate answer is C !! software os used for using hardware !!
Since you are searching for researching information, .edu will be more reliable.
.edu is for education purpose, with credits of scholars.
.com is a general URL, it's not relavant to reliability.