Saying what you mean

How many times do you give your boss (or other coworker) a set of options only to receive an answer of 'yes' instead of geting a direct answer? How often are the answers ambigious when you need, no require, a direct answer?

Too often from some and it can be very frustrating.

When all options are acceptable then the response should indicate that.

This is all part of setting expectations from upper management - you have to let your staff know that if you give an ambigious answer that they are free to select the one they believe is the best. If that expectation is not set then everyone looses.