Cambridge Analytica was accused of working on the presidential campaign of which candidate?

• A. Donald Trump's presidential campaign.
• B. Hillary Clinton's presidential campaign.
• C. A European Parliament campaign.
• D. A Canadian provincial campaign.

Answer: (A)

Cambridge Analytica’s notoriety comes from using data-driven profiling and targeted messaging to influence political outcomes. In the 2016 US presidential election, the firm was accused of working with Donald Trump’s campaign, providing data analytics and targeted advertising aimed at persuading specific voter groups. This collaboration, built on harvesting and analyzing large amounts of personal data to tailor messages, is what most people refer to when discussing their role in that election. The other options don’t match the well-documented association with the presidential race in question, and the focus around Cambridge Analytica’s controversies is centered on the Trump campaign rather than European Parliament or Canadian provincial contests.