Boat conformation: axial hydrogens
It says fully: TRUE OR FALSE: Boat cyclohexane is a slightly higher
  energy conformer than chair cyclohexane because: (a).... (a sub
  question) T OR F (b).... (a sub question) T OR F (c)chair cyclohexane
  has more axial hydrogens. T OR F


The answer to part (c) of that question is "False."  It turns out that the chair and boat conformations of cyclohexane both have 6 axial hydrogens - so the chair does not have more axial hydrogens.  Here's a picture of the chair (on the left) and boat (in the middle), you should be able to see the 6 axial hydrogens in both the chair and the boat.