Your client is working with an agency to set up a product feed in Google Merchant Center, but the agency is not sure which attributes to include. Which attribute is optional?

The Product_type attribute is optional when configuring a product feed in Google Merchant Center.

• availability
• price
• image_link
• product_type

Explanation:
The product_type attribute in Google Merchant Center product feeds is optional, though highly recommended. While it’s not required like essential attributes such as id, title, description, and link, adding product_type can significantly improve product categorization and ad relevance. It enables you to define your own product hierarchy, offering more detailed classification than the standard Google product category.

In addition to product_type, there are other optional attributes like custom_label_0, gender, age_group, color, and condition that can be used to enhance product descriptions and support better campaign organization in Google Ads. Leveraging these optional attributes can boost product discoverability and allow for more precise targeting, ultimately improving campaign performance.