Give the $IUPAC$ names of the following compounds:

(N/A) $1-phenylpropane$ (Note: The provided solution image incorrectly labels it as $3-phenylpropane$)
$(b)$ $3-methylpentanenitrile$ (Note: The provided solution image incorrectly labels it as $2-methyl-1-cyanobutane$)
$(c)$ $2,5-dimethylheptane$
$(d)$ $3-bromo-3-chloroheptane$
$(e)$ $3-chloropropanal$
$(f)$ $2,2-dichloroethanol$ (Note: The provided solution image incorrectly labels it as $1,1-dichloro-2-ethanol$)