Interview Question for Business Analyst at Whole Foods:

Job description said NOTHING about giving presentations nor did anyone offer that this would be a quality expected of a BA when directly asked about it (if so, I would have prepared an adequate response). That information was deliberately withheld from me in an effort to trip me up in the formal interview.

I'd answer this by saying that these were actually two different questions - how one feels about giving a presentation on something you have knowledge about but on the fly, versus how one feels about giving a presentation about which one lacks knowledge. Clearly, the first situation would be preferable.