i think it might be the fourth one?
What do you want us to do ??
A is correct because it isn't saying his or her and also its using correct grammar.
Answer: Ditman, brunyé, mahoney, and taylor (2009) investigated the role of embodiment in text comprehension by varying the pronoun used to describe a three-sentence piece of discourse that described an activity. comprehension was best when the pronoun subjects were reading was <u>you and I</u>.