Why are tracking tools like Facebook Insights crucial for businesses?

Tracking tools like Facebook Insights are essential for businesses because they provide valuable data regarding ad performance and user engagement. This data allows businesses to measure how well their campaigns are performing, understand audience behavior, and identify which strategies are effective or need adjustments. By analyzing metrics such as click-through rates, impressions, and engagement, businesses can make informed decisions that enhance their marketing strategies, optimize ad placements, and improve targeting. Ultimately, this leads to better returns on investment, as companies can focus their efforts on what resonates most with their audience.

The other options do not accurately capture the primary function of Facebook Insights; while aesthetics, ad variety, and cost management have significance in advertising, they are not the core focus of tracking tools like Insights. The primary role of these tools lies in performance analysis and user engagement metrics.