Answer:
b. blogger
Explanation:
-A microblogger is a person that writes short entries like small updates on a blog or social media.
-A blogger is a person that generates content in a blog in the form of articles for other to read usually in a specific topic.
-A social media designer is a person that creates content to be posted in social media.
-A social media developer is a person that handles the social media of a business and takes care of activities like the configuration of profiles, the creation of content and the generation of reports.
According to this, Zac was hired as a blogger.