Answer:
maltose
Step-by-step explanation:
If we intend to determine the largest molecule, then we must look at the relative molecular mass of each molecule because the larger the molar mass, the larger the molecule.
Hydrogen =2 gmol-1
Carbon dioxide = 44 gmol-1
Ammonia = 17 gmol-1
Maltose= 342.3 g/mol
Hence maltose is the largest molecule among the options.