Final answer:
The statement about the largest gold nugget found in 1872 is a historical fact, verifiable by records and physical evidence.
Step-by-step explanation:
The statement that 'The largest nugget of gold on record was found in 1872 in New South Wales, Australia, and weighed 93.3 kg' is a fact. A fact is a statement that can be proven to be true or false. In this case, historical records can verify the discovery of a large gold nugget weighing 93.3 kg. Facts are often based on physical evidence or reliable documentation, unlike opinions, inferences, or hypotheses which are shaped by personal feelings, interpretations, or theories without definitive proof.