What do you do when something about your work doesn't make sense to you? What specifically did you do?
Instead of blindly following protocols, it is also important that you understand the what and why behind them. Seeking opportunities to learn when you don't understand can be a very telling factor about your initiative on the job. Try to give an example of when something small didn't make sense to you, the action you took to understand it, and how the job was completed. Do not give an example of just following instructions blindly even though you knew it didn't make sense.
"Since I work with a wide variety of devices, there are often times when something about a particular instrument doesn't make sense to me. This might be because I've never worked on this exact type of equipment, or maybe it's been modified in some way. This is where common sense and troubleshooting techniques come in handy! It helps to think through all parts of the instrument - upstream, midstream, and downstream. If I can identify those, it will help a lot in trying to figure out the rest. I've even had to work with engineers to go over the schematics of an instrument because what we were seeing just doesn't make sense based on how it should be. I actually enjoy getting to figure this type of stuff out when it doesn't make sense to anyone else."