Respuesta :
The common data source, like social media comments are categorized as unstructured form of data. Thus, option d. is correct.
What are common data source?
The common data sources are the form of data that are openly assessible by authorized parties, third parties, and other users of the data. The common data source includes the data that is common for all social media platforms, those are operated by people across the globe.
The unstructured form of data are the database files or notes those are not saved or listed in a systematic manner. These form of data does not have a common structure in which it is displayed on the social media.
The comments displayed on the social media posts are the form of unstructured form of data. This is because there is no common format for mentioning a comment.
Therefore, option d. is correct.
Learn more about unstructured data, here:
https://brainly.com/question/14453366
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