All the given IUPAC names are correct except 1− amino −1− ethoxypropane. As the highest priority functional group in this compound is amine, it will be the suffix. Parent carbon chain is a three carbon chain, and −OC2H5 is a substituent for which 'ethoxy' is the prefix. So, IUPAC name of the compound is 1− ethoxypropan −1− amine.