Final answer:
A hashtag in social media is used to categorize information and make it easily searchable for users. Therefore, the correct answer option is B)
Step-by-step explanation:
A hashtag in social media is used to categorize information and make it easily searchable for users. It allows users to group and find related content on a specific topic or theme.
Hashtags are created by adding the '#' symbol before a word or phrase, without spaces or punctuation. For example, '#foodie' can be used to find posts related to food or '#throwback Thursday' can be used to find posts that share old photos or memories.