I need the answer to the below question

Under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.

Me dangers of social media and the internetexplain what each means: 1) social media and phones have become an addiction.2) outside people have access to you all the time.3) cyberstalking4) cyberbullying5) catphishing6) viruses7) identity theft8) credit card fraud9) hacking10) money schemes

What is the next step if your volume does not work on computer