Lead with the recommendation first, then explain the two or three reasons supporting it and the most important risk.

Decisiveness comes from having a clear point of view, not from claiming certainty.

For example: 'I recommend entering the market because demand is growing and the client has a cost advantage. The main risk is regulatory approval.'

Use a consistent structure: recommendation, supporting evidence, key risk, next step. If useful, this guide on case interview insight generation gives more detail.