It seems to me that you'll want to present this through two multiple-choice questions, both short and to the point and with a limited range of possible answers, but more than a single presumed goal (data point 1) and more than two top-tier, also presumed, pain points (data point 2). To that end, you'll need info on alternate goals and pain points - hard to get into more detail without domain information (which is likely classified, I quite understand).
In order to set this up, perhaps you could quiz your stakeholder, casually and innocently of course, on goals or pain points they previously assumed their users had, and how they found out that these assumptions had no base in reality and hence need no further investigation. That will give your interlocutor an opportunity to shine with the sheer brilliance, depth, and acuity of their insights (and more to the vanity piece below).
You may expand that pain point piece into querying the nature of participants' pain point; financial, time, or stress and aggravation. Ask for a response ranking here, or else people say 'all of the above and then some' and you get shoddy data.
For valuation insight, this gets tricky. A slightly gamified research method comes to my mind; it's called Buy-me-a-Feature. By this method you place a dollar value, or some equivalent monetary expression of material worth, next to a given characteristic of your offering. It's a bit like App Store honesty: I will always gravitate toward an app that's $9.99 with a concise description of its feature set (good ratings are an added bonus), over some vaguely stated value proposition with 'in-App Purchases'.
Buy-me-a-Feature unfortunately requires deeper marketing insight or else it can quickly become hokey and cause loss of credibility unless you can really gamify the experience and use Monopoly money. And when used as a survey rather than in a face-to-face research situation it presumes that something is actually for sale. Neither may apply to your situation.
No offence but it sounds like your stakeholder has a severe case of salesmanship bias, and surveys to such a tune do little but annoy consumers. Plus the age-old trite statement that "we know our customers" does little but annoy designers!
You may need to play to that person's manifest vanity a little, and if that isn't going anywhere I would have hard business ethics take over and state rather bluntly that a mere confirmation survey, such as unfortunately pushed on you, will just not present enough value to justify the expense - and frankly that time is better invested in clean UI detailing to at least make a poorly researched offering present in a shiny way. If you're in a consulting situation - even in-house - that may be the Ultima Ratio. After all, you're the professional expert whose advice your stakeholder seeks, and he or she must be treated with honesty. If your patient insists on the personal benefits of smoking, what are you as their doctor going to be telling them?
Sometimes anecdote telling does the trick:
Presumed goals and pain points are a little like these telemarketing calls we get for furnace cleaning (I live on the 18th floor of a high-rise condo building, alas no fireplace), dog grooming (we have new-ish furniture, allergies, and a love of travel, hence no poochies even though we love 'em) or that extra credit card I must have (no thanks, I want to make more money, not owe more). Even if one of these things ever becomes a true need, I will most certainly not enlist the telemarketers' services to satisfy them. It's just not good business.
To sum up: If you manage to convert your survey into a slightly expanded multiple-choice questionnaire with drilldown on pain point categories, you might gain a lot.
Difficult situation, to be sure - best of luck!