Final answer:
Case inflection in Modern English involves changes in the form of words, like pronouns, to express different grammatical functions. 'He' changing to 'him' is an example of this. These changes can indicate whether a pronoun is in the subject, object, or possessive case.
Step-by-step explanation:
The concept of case inflection in Modern English refers to the changes that occur to words to express different grammatical relationships. An example of case inflection in Modern English is option B) Changing 'he' to 'him'. In this example, 'he' is the subject form of the pronoun, while 'him' is the object form. This change indicates the function of the pronoun in the sentence, whether it is performing an action (subject) or receiving an action (object). Other forms of pronoun inflection include possessive cases like 'his', 'her', or 'their', and reflexive forms like 'himself' or 'themselves'.
When considering the elements of speech in various regions or among ethnic groups, we might encounter expressions like y'all and ain't, though they are more linked to dialectal variations than to grammatical inflections. A universally accepted case of pronoun inflection that deviates from traditional rules is the use of 'their' as a singular, gender-neutral possessive pronoun, as in 'Every person should wash their hands.'