Answer:
B.) They understand that changing stimuli, such as new tweets or breaking news stories, are more likely to grab our attention, and thus our clicks.
Step-by-step explanation:
New technologies take advantage of our ever changing stimuli as humans to make us click on breaking news and stories or tweets on the internet space, hence generating money.
They are aware that sensational headlines grab our attention so they have taken full advantage of this to make sure we click on their breaking news, hence more money for them.