Answer:
Referential
Step-by-step explanation:
Referential style: The term "referential style" is described as a style of speech in which early learning of language occurs in toddlers where they use language mostly to label different objects. However, referential style develops as soon as toddlers stats to use language as a source to interact with some other person and emphasizes social pronouns and formulas.
In the question above, William uses a referential style of speech.