What is Boolean operator?

a. a credible website described as having current information about a topic

b. a tool used to organized a search log when conducting online research

c. seacrh parameters set to identify specific information during Internet searches

d. a person who post fake information on the internet.

Option c is the correct answer for the above question

Explanation:

The Boolean operator is used when any person is searching on the internet to help the user is searching. It works like conjunction to add the two or more searching criteria and make one. These features make the searching parameter good and the user gets a good result. this concept is also stated by the option c. Hence option c is the correct answer, while the other is not because-

some have built technology like spoofed call blockers into their networks, so there's nothing you would even have to install.

this happens because the number is known for scamming, they don't want it to me known as "scam likely." perhaps it's just a telemarketer. maybe it's an identity thief. it might even be a scam artist.  

either way, "scam likely" is probably not an old friend whose number you forgot that you saved. it's your wireless carrier's way of letting you know: answer at your own risk.

explanation:

to combat the seemingly rising epidemic of spam callers in the u.s., the nation's four major wireless carriers have been trying out new methods to reduce the number of unsolicited calls americans receive each day.

some have built technology like spoofed call blockers into their networks, so there's nothing you would even have to install.

hope this . mark me brainliest.