To upgrade ece-tools on Adobe Commerce Cloud, the recommended command is to use Composer to ensure that all dependencies are resolved and updated accordingly. The command composer update magento/ece-tools --with-all-dependencies will update ece-tools along with any other dependencies required.

Using Composer for Dependency Management:

Composer is the standard package manager for PHP and is used to manage dependencies, including ece-tools in Adobe Commerce Cloud. This command ensures that any required dependency updates are also applied.

Why Option B is Correct:

Option B leverages Composer's ability to handle dependencies, which is essential to avoid version conflicts.

Option A (php ./vendor/bin/ece-tools upgrade) does not exist for ece-tools. Option C is incorrect because magento-cloud ece-tools:upgrade is not a valid command for updating ece-tools.