Answer:Expressive langauge learner
Explanation:Expressive language learner is the person or baby that is able to use actual words,gestures and sentences in order to communicate their needs and wants to others.
Expressive langauge skills ranges from labelling objects and certain actions in order to come up with a sentence , this help a child to express themselves in a grammatically correct way.
This is speculation, so please get a second opinion.
I think it's c, because the adults, in this passage, are teaching children how to behave, and therefore a and b are ruled out. d could have possibly been one, but I think that it would not be, because the adults are not explicitly setting clear examples for their children.
Again, you should get a second answer before you answer this.
Its a plural possesive because of the -es and the apostrophe
