You are correct. I just checked this and the person who typed this in did not type it correctly.

Your correction is exactly right. Thank you for that "Bigge2win"...

You will notice more errors in the way this was transcribed - including "public interest in, an enjoyment of," The "an" should be "and"

Also, answer choice C is totally wrong it is missing the "not" as in "There has NOT been a corresponding increase in the number..."

Please pay attention when you transcribe!!