Answer:
FOR age between 18 and 24 is Snap chat,
age between 35 and 44 is LinkedIn
Explanation:
the most popular social networking sites for the people in the age between 18 and 24 is Snap chat,
Snap chat - because of easy handling it is quite popular in the youth
the most popular social networking sites for the people in the age between 35 and 44 is LinkedIn
LinkedIn - it is social platform for professional where people get connected due to get any job reference or for sharing knowledge regarding their fields.
