You are a DevOps engineer working on deployment workflows.

The GitHub context exposes the short name of the branch or tag through github.ref_name. For a workflow triggered from a branch named feature-branch, the expression github.ref_name == ' feature-branch ' evaluates to true, allowing the job to run. GitHub also provides github.ref, but that value normally contains the complete Git reference, such as refs/heads/feature-branch, rather than only the short branch name. The properties github.branch_name, github.ref.name, and github.branch.name shown in the other options are not valid GitHub context properties. GitHub evaluates a job-level if expression before sending the job to a runner, making this an appropriate mechanism for conditional deployment execution. Therefore, option B uses the correct context property and comparison syntax.

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