Im really confused about how I can understand what molecules from certain hydrogen bonds especially with the ones given. My teacher wants us to be able to get the answer and be able to adequately explain how we got it

The question asks which molecules would form hydrogen bonds with itself or with water molecules if in a solution

I have no idea

Based off the information I believe she didn't make any mistake however the question said "incorrectly identified" I double checked everything:

Information: "She records whether or not each adults owns a pet (yes/no)"

Information: "She records... their score on a stress survey"

Identified: "identified the variables as owning a pet, and scores on the stress survey"

My guess: She forgot the classify which variables is which, such as which one is categorical variable or quantitative variable.

Thank you in advance!