Scan paragraphs 8-10, which of the following is excluded from the solutions made by some of network marketers to deal with parents’ worries about their kids?

A. Many social media like YouTube & Google bar kids under 13 except Instagram
B. Some children establish their public identities on social-media networks like YouTube and Facebook with their parents’ permission
C. Google will close the accounts of those who fail to meet their age requirements
D. Many sites require their users enter their date of birth upon signing