An advertiser can set up enhanced conversions for leads through Google Tag Manager, the Google tag, or the Google Ads API.

• Enhanced conversions for leads can be set up through Google Tag Assistant.
• Enhanced conversions for leads can be set up through Google Analytics Manager.
• Enhanced conversions for leads can be set up through the Google Ads API for enhanced conversions.
• Enhanced conversions for leads can be set up through Google Tag Manager, Google tag, or Google Ads API.

The correct answer is: Enhanced conversions for leads can be set up through Google Tag Manager, Google tag, or Google Ads API

Explanation: Advertisers can set up enhanced conversions for leads using a few common methods, making it accessible regardless of their technical setup:

• Google Tag Manager (GTM): This is a popular option as it allows for managing tags and sending enhanced conversion data (like hashed user-provided data from lead forms) without directly editing website code.
• Google tag (gtag.js): For those directly implementing the Google tag on their website, they can configure it to send the necessary hashed first-party data alongside their conversion events.
• Google Ads API: This method is suited for advertisers with robust development teams who want to automate and integrate their conversion data submission more deeply with their internal systems.

These methods provide flexibility to transmit the hashed data required for enhanced conversions, improving measurement accuracy.

Reference Link: Set up enhanced conversions for leads – Google Ads Help: https://support.google.com/google-ads/answer/15713840

This official Google Ads Help page explicitly lists these three methods (“Google Tag Manager,” “Google tag,” and “Google Ads API”) as ways to set up enhanced conversions for leads.