According to the UK GDPR, the data subject has the right to object, on grounds relating to his or her particular situation, to the processing of personal data concerning him or her which is based on point (e) or (f) of Article 6(1), including profiling based on those provisions1. The controller must stop the processing unless it demonstrates compelling legitimate grounds for the processing which override the interests, rights and freedoms of the data subject or for the establishment, exercise or defence of legal claims1. The WP 29 Guidelines on Automated individual decision-making and Profiling provide some guidance on how to assess the existence of such compelling legitimate grounds2. The controller needs to carry out an exercise that weighs the interests of the controller and the basis for the data subject's objection, consider the impact of the profiling on the data subject's interest, rights and freedoms, and consider the importance of the profiling to their particular objective2. However, the controller does not need to demonstrate that the profiling is for the purposes of direct marketing, as this is a separate ground for objection under Article 21(2) of the UK GDPR, which gives the data subject an absolute right to object to such processing13. Therefore, option C is the correct answer, as it is not required by the controller to demonstrate that it has compelling legitimate grounds for profiling. Reference: 132
https://gdpr.eu/article-21-right-to-object/ https://ico.org.uk/for-organisations-2/guide-to-data-protection/guide-to-the-general-data-protection-regulation-gdpr/individual-rights/right-to-object/