Help me with 2 4 and 5

Solution;    
2).  A median of a triangle is a line segment that joins a vertex to the mid-point of the side that is opposite to that vertex .
  So, PD is median.
  An altitude of a triangle is the perpendicular segment from a vertex of a triangle to the opposite side .
  So, PM is altitude.
  Hence ,option (c) is correct .As PD is median and PM is Altitude