Final answer:
The correct pronoun for the sentence is 'they.' Modern English allows the use of 'they' as a singular pronoun.
Explanation:
They is the correct pronoun for the sentence. While traditionally 'his' or 'her' were used for singular antecedents, modern English accepts the use of they as a singular pronoun.
Learn more about Pronoun choice here:
https://brainly.com/question/38899617
