What is the best way to describe how an Internet search engine works? (Hint: this is why you have to spell correctly when you use a search engine.)
1.A search engine looks up all the library books ever written about the word you typed.
2.A search engine relies on a person who is hired to send you information about the word you typed.
3.A search engine looks through all the text on the Internet for an direct match to the word you typed.
4.A search engine figures out the question you have based on the word that you type.