How can an advertiser set up enhanced conversions for leads?

The selected option is correct because enhanced conversions for leads offers a flexible implementation framework that can be tailored to an advertiser's existing technical infrastructure via Google Tag Manager, the Google tag, or the Google Ads API. Unlike standard offline conversion imports that rely solely on a GCLID (Google Click ID), this solution allows the system to capture first-party data—such as a hashed email address or phone number—directly from a lead form on the website. By using these durable identifiers, Google can later match offline outcomes (like a closed sale in a CRM) back to the original ad interaction in a privacy-safe manner, providing a more complete picture of lead quality and improving the accuracy of automated bidding even when traditional identifiers are unavailable.