Answer
Please see the work below.
Work Step by Step
In a molecule, single bonds represent sigma bonds. In a double bond, one bond represents a sigma bond and the other one represents a pi bond. In a triple bond, one bond is a sigma bond and the other two are pi bonds.
a) There are four sigma bonds and no pi bonds.
b) There are five sigma bonds and one pi bond.
c) There are ten sigma bonds and three pi bonds.
