I'm sorry for my assumptions about all immigrants.

I agree that this grammar error needs to be corrected, especially since so many people take this test. I am glad you are picking up on these problems.
I'm also sorry about piggybacking on your post, but I assume that some administrator will read this thread, so I could kill two birds with one stone, since it does relate to the sanity test. I am a psychologist, and I was more conscious of issues of test construction for validity when I took it.