Howdy Garrett, yes Marlene pointed out exactly what we were contrasting the question with (two objects and one thread vs. two threads and one object).
Java synchronization is not designed to prevent a single thread from accessing two objects, since any thread can access an object as long as it gets the lock (mutex). But I have to say I'm not exactly in love with our wording on this question. Just too many ways you could conceivably look at it, and you probably found one that wasn't what we intended.
I'm hoping Marlene's post brought up our intended perspective
And good luck, I understand you're taking the exam very soon.
cheers,
Kathy