Social Media Advertising: Analyzed Based on User Preferences

The correct answer is:

c. analysed

The sentence should be: 'All of this social media advertising is analysed based on user preferences.'

'Analytically' is an adverb, 'analyst' is a noun referring to a person who analyzes data, and 'analysed' is the correct past participle form of the verb 'analyze.' In this sentence, we are stating that the social media advertising is analyzed or examined based on user preferences.