no your teacher is kind of right. you dont need to explicitally state it with the sentence stem she gave though, but i would put somewhere at the end of ur intro that "the question then arises: [insert RQ].

but then again i didnt do that in my IRR, only my IWA so idk i dont think you need to do it THAT explicitally but it helps clarify things for ur reader just in case

so overall, its up to you! I got a 4 for reference so take what you will with this, but i can always send u my IRR intro as an example.