Answer
$(c)$ and $(e)$ are true
Work Step by Step
a) - Sugar is not a mixture, but a compund. Thus - $False$
b) - Compounds too are pure substances, hence - $False$
c) - Air is a mixture of gases ( Approx 78 % $N_{2}$, 21 % $O_{2}$, 1 % Others) - hence - $True$
d) - Gasoline is a homogeneous mixture made from processing or refining crude oils, and hence - $False$
e) - Compounds $cannot$ be broken down by physical means as the elements inside have strong forces of attraction binding them, and hence, - $True$
