The thing is you are probably trying to solve the case, which is not what you are going to be evaluated on.
Structure and logical approach allow you to find an answer, and that is what consultants should do. Having an answer before structuring often means the answer is wrong an or you think too highly of yourself - both no gos.
Step 1: Repeat back what you heard
Paraphrase the prompt in one sentence. Shows you listened. Buys you time to think.
Step 2: Confirm the goal
Ask: "So we're trying to decide whether to [do X], correct?" or "The objective is to [increase profit/enter market/etc], right?" Lock in what success looks like.
Step 3: Ask 2-3 clarifying questions
Not random questions. Ask what changes your approach:
- Geography or market scope
- Time horizon
- Constraints (budget, capacity, risk tolerance)
- Product/customer specifics if vague
Step 4: Take 30-60 seconds to structure
objective, buckets, subbuckets
Step 5: Present your structure
Walk them through it in 30 seconds: "To figure out if [client should do X], I want to look at three areas: [A, B, C]. Within A, I'll examine. Within B,. I'd start with A because [reason]. Does that sound reasonable?"
You just need a logical map.