A key responsibility of the Scrum Master/Team Coach (SM/TC) in SAFe® is to support Iteration Execution. This involves ensuring that the team adheres to Agile principles, manages dependencies, removes impediments, and maintains focus on achieving iteration goals.

The Scrum Master facilitates team events, promotes collaboration, and helps the team continuously improve. They also assist in managing scope and ensuring transparency by tracking progress through iteration burndowns, Kanban boards, or burn-up charts.

From SAFe guidance:

“Scrum Masters support iteration execution, help the team meet iteration goals, and ensure all Scrum events are productive and within their timeboxes.”

Therefore, the correct answer is B. Supporting Iteration Execution, as it encapsulates a central part of the Scrum Master/Team Coach role.