In which situation are the individual molecules moving the fastest? a) in a bowl of hot soup b) in a glass of iced tea c) in a glass of tap water d) in a cup of boiling water\

The individual molecules of water while boiling will move fastest amongst the given choices. As the boiling of water will cause the liquid molecules to increase the intermolecular forces of attraction between molecules and get escaped into vapors. Here, there is a transformation of state that is about to occur from liquid to gaseous. Compared to other examples, where there are no change of state occurring.

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.