What is one$-$way hackers can trick you into transmitting personal data over on a public network without your knowledge?

Select one:

a$.$ They use adware to fill your screen with unwanted advertisements until you click one.

b$.$ They overload the server with network traffic so webpages will not load.

c$.$ They disguise the network as an evil twin.

d$.$ They encrypt your computer data and hold it hostage until you pay a fee, usually with bitcoins.