SORU: ?
(I) Extensive observations of parents and children show
that parents tend to focus on meaning rather than form
when they correct children's speech. (II) They may
correct an incorrect word choice, an incorrect statement
of the facts, or a rude remark, but they do not often react
to errors, particularly grammatical errors, that do not
interfere with communication. (III) The variation in the
extent to which parents correct their children's speech is
based partly on the children's age and the parents' social
and educational background. (IV) What this tells us is
that children cannot depend on consistent corrective
feedback in order to learn the basic structure (the word
order, the grammatical morphemes, the intonation
patterns, etc.) of their language. (V) Fortunately, they are
able to acquire the accurate form of the language without
this kind of explicit feedback.
Which of the sentences in the given paragraph is
irrelevant, violating its unity and coherence?