An advertiser has decided to exclude “IM – cell phones” from all seven lines in an order. What bulk edit feature would allow you to do this?

To exclude a specific audience segment like "IM – cell phones" across multiple line items, the most direct and efficient method is to use the bulk edit feature for audience exclusions. Navigating to "Bulk edit → Targeting → Audiences → Exclude audiences" allows you to select the desired audience to exclude and apply this exclusion simultaneously to all selected line items. "Add audiences" would include the audience, not exclude it. "Remove audiences" would remove an existing audience inclusion, which isn't the goal here. "Domain → Exclude existing targeting" is for excluding domains, not audiences.