I thought the yellow part is a generic part of the letter.
@Canadabanana did you highlight it in yellow before sharing it with us, or did IRCC send it as highlighted?
I think what has been requested at the top of the Page 1 is the original passport of the applicant. The rest of the instructions are just generic instructions that go out probably with most letters that they send out? It also mentions how to obtain a PCC, whereas in this case PCC has not been requested at all.
I feel that they are asking for the original passport.
@Canadabanana is the Principal Applicant currently in Canada or resides in Canada? What is his/her country of nationality?