Scenario 18-3 For Some Years Now, Enterprising Individuals Have Gotten Their Own

Scenario 18-3
For some years now, enterprising individuals have gotten their own ideas, forums, and entertainment programs out in front of the public with no help from big tech firms, media conglomerates, or ad agencies. They simply posted their creations on the Internet. It began with blogs, moved to podcasts, expanded to social networks, moved on to YouTube videos, and transferred to Twitter. Audience members can download these technological tidbits-text, visual, and audio formats-to their laptops as well as to cell phones, Blackberries, iPods, iPads, and every other mobile gadget that hits the market. Eventually, public relations companies started getting into the act.
-(Scenario 18-3) A garment manufacturer emphasizes designing clothes using sustainable practices.Recently,it launched a Facebook page to gather signatures of people in favor of planting three trees when one is felled.This is a form of _____.

A)  corporate image advertising. 
B)  advocacy advertising. 
C)  buzz marketing. 
D)  influencer marketing.