In terms of the first question, "They" would be an objective pronoun, but it should be noted that this does not have to be so. for the second, the answer is "my".
Answer:
Reading body language is important to field research because It can be used a tool for interpreting ones attitudes or feelings towards someone or something
Answer:
1) Harry and the dursleys...
2) Hagrid gives harry....
3) Hagrid gives dudley...
4) hagrid tells harry...
5) hagrid sends a letter...
4: to give detailed explanations of specialized facts
