It depends on the specific question being asked. It can be as broad as “what is the footprint of your business?”, which needs clarifying first - are they looking for scope 1, scope 2, scope 3, or all of them?
It can also mean they want to know the specific impact of what they are buying from you: how your business impacts theirs when they buy from you. That is where something like a life cycle assessment comes into play, where we assess the emissions associated with delivering that particular product or service, so the client understands very specifically how your business impacts theirs.