Which command-line tool is used for deploying code to Salesforce B2C Commerce?

The most suitable command-line tool for deploying code to Salesforce B2C Commerce is the Salesforce CLI. This tool provides developers with a robust interface for managing Salesforce applications and includes capabilities for deploying code, managing orgs, and working with metadata. It is designed to work seamlessly with different Salesforce platforms, including B2C Commerce.

Using the Salesforce CLI, developers can leverage commands to push code and configuration from their local environment to Salesforce environments efficiently, which is crucial for continuous integration and deployment workflows. The Salesforce CLI also supports scripts and automation, enhancing productivity for development teams.

Other options, such as Code Builder and Business Manager, are designed for different aspects of the Salesforce ecosystem. Code Builder is a development environment, while Business Manager is used for managing business operations in B2C Commerce sites. The Deployment Assistant is not a command-line tool and is generally used for managing deployments through a user interface rather than the command line. Therefore, the Salesforce CLI is the correct answer for deploying code to Salesforce B2C Commerce.