Hey there.
The answer to your question is C: 42 oz
Lets use 1 quart as our base and see what is equal to it and the one that is not equal to it.
1 quart does in fact equal 4 cups
1 quart also in fact is equal to 2 pints.
But 1 quart is equal to 32 oz. Not 42 oz
Making C: 42 oz. The one that is not equal to the others.
Hope this helps!
Brainliest is always appreciated if you feel its deserved!