Welcome to your interview.
The question is on your right: Diagnose Budget Spend, Low ROAS. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
If a client’s campaign is hitting its budget but failing to meet its target ROAS, what steps would you take to identify the root cause?