A customer is using B2C Commerce, Marketing Cloud, Service Cloud, and Experience Cloud.

Salesforce CMS is a product that allows creating, managing, and delivering content across different channels and devices. Salesforce CMS can create common content that can be leveraged across customer touchpoints, such as websites, portals, apps, etc. The products that can leverage Salesforce content without custom integration are:

Experience Cloud: Experience Cloud is a product that allows creating branded websites and portals for customers, partners, or employees. Experience Cloud can leverage Salesforce content without custom integration, by using CMS Connect or CMS Collections to display content from Salesforce CMS on Experience Cloud pages.

B2C Commerce: B2C Commerce is a product that allows creating ecommerce websites and storefronts for online shopping. B2C Commerce can leverage Salesforce content without custom integration, by using CMS Connect or CMS Collections to display content from Salesforce CMS on B2C Commerce pages.

Option C is incorrect because Marketing Cloud is a product that allows creating and delivering personalized marketing campaigns across different channels and devices. Marketing Cloud cannot leverage Salesforce content without custom integration, as it requires using APIs or custom code to access content from Salesforce CMS. Option D is incorrect because Service Cloud is a product that allows managing customer service interactions across different channels and systems. Service Cloud cannot leverage Salesforce content without custom integration, as it requires using APIs or custom code to access content from Salesforce CMS. References:

https://help.salesforce.com/s/articleView?id=sf.cms_overview.htm &type=5

https://help.salesforce.com/s/articleView?id=sf.networks_cms_connect.htm &type=5

https://help.salesforce.com/s/articleView?id=sf.networks_cms_collections.htm &type=5