A baby is in a cradle. One of the boys is looking at the baby. He said, "_________"

1. It is smiling.
2. He is smiling.
3. She is smiling.
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Wich expression can he use? If the boy doesn't know whether the baby is a girl or a boy, does he have to say as in #1?

Once a baby is born, it's best not to use "it"! I'd use "he" and then wait to see if the parents correct me.

If the boy doesn't know the gender of the baby, he should use a gender-neutral pronoun. In this case, the appropriate pronoun to use would be "it," as it does not imply a specific gender. Therefore, the correct expression would be "It is smiling" (#1).