Cathleen is having trouble learning the steps involved in using a microscope correctly. if you consider vygotsky's description of how children themselves get through difficult tasks, you should suggest that cathleen:

In Vygotsky’s description, in helping Cathleen solve her problem, what she must do and is suggested is that she needs to work with a partner or to work with another person in a way that will help her step by step in coping up with the task.

i think it is the third one.

answer; generalizability;