Final answer:
An advertiser might use enhanced conversions for leads to improve the quality of the conversion tracking. This enables the optimization of campaigns for higher-quality leads by using the advertiser's own first-party data in a secure and private manner.
Step-by-step explanation:
An advertiser may opt to use enhanced conversions for leads for various strategic reasons. One key reason is to achieve B. Higher Quality Leads. Enhanced conversions allow advertisers to use their own first-party data to improve the quality of the conversion tracking.
By adding more detailed conversion data from their leads, advertisers can better understand which conversions are most valuable and use that information to optimize their campaigns for higher-quality leads.
This process involves using secure encryption techniques to protect user privacy while allowing more accurate conversion attribution and bidding optimizations which, in turn, can drive more meaningful engagements with potential customers.