Default Account Teams allow users to predefine a set of supporting internal users (e.g., legal, engineering, finance) who need access to customer records. The team members are automatically granted the specified access whenever an Account is created or updated, reducing the manual effort required by sales reps.

Option A: A criteria-based sharing rule might grant access to a larger group but does not provide the flexibility and precision of Account Teams.

Option C: Assigning View All Data via a permission set gives overly broad access and violates the principle of least privilege.