People Are Tested on the Following: Staying Balanced on a Unicycle

People are tested on the following: staying balanced on a unicycle, understanding Shakespeare, juggling balls, solving algebraic problems, writing an essay on a controversial topic, counting backward by 7 out loud, comprehending vocabulary, balancing a checkbook, and completing an obstacle course. Most likely, the patterns of correlation among these tests would yield _____ middle-level abilities.

A) 2
B) 3
C) 5
D) 9