Here's a question and a few possible answers: 

Q: Jim chose clear paint.  He could have chosen another type but it would have covered up the natural beauty of the wood.  What sort of paint could he have chosen instead?
Possible A: opaque, opal, obscured, obscure, thick

Why is "opaque" an answer aligned with human common sense? 


opaque chosen another type but it would have covered up the natural beauty of the wood