What is the correct pronoun below to avoid bias in following sentence Any student who wishes go on field trip must bring his permission slip?

The correct pronoun to avoid bias in the sentence "Any student who wishes to go on a field trip must bring his permission slip" is their.

Here's why:

* "His" is gender-specific and assumes all students are male. This creates bias.

* "Their" is a gender-neutral pronoun that can refer to singular individuals of any gender. It's the most inclusive option in this case.

The corrected sentence is: "Any student who wishes to go on a field trip must bring their permission slip."