Final answer:
The appropriate pronoun for gender-neutral language in English sentences.
Explanation:
Indefinite pronoun agreement in English mandates using his or her rather than their to maintain subject-verb agreement. For instance, in the sentence 'Everyone must bring his or her own sheet music to the concert,' his or her is the correct pronoun choice.
Traditionalists prefer the use of his or her to ensure gender inclusivity. However, the pronoun their has become commonly used in modern English as a gender-neutral option.
In situations where gender neutrality is crucial, using his or her is recommended to avoid excluding any gender, as in the example, 'Each member of the team brought his or her unique knowledge to the project.'
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