Read the following passage about adolescence and mark the letter A, B, C, or D to indicate the correct option that best fits each of the numbered blanks from 18 to 22.

Adolescence is a difficult time for both parents and teenagers as it is a period of physical, social and emotional change. Physically, as a dependent pre-teen child, (18) _______ . In general, emotionally and socially, adolescents like you are experiencing profound changes in terms of freedom, privacy, interests, decisions and opinions.
First, you want more freedom to choose who to see and when. (19) _______ . Now you want to spend some more time on your own. Second, your parents made most decisions before adolescence. But now you want to decide things for yourselves. You hate being told what to do all the time. Above all, adolescents have strong opinions and are idealistic. (20) _______ . You feel you have all the answers while adults don't.
All these perfectly normal changes will affect teenagers' relationship with their parents. (21) _______ ? Firstly, let your parents know that you still love and value them. Secondly, try to agree to rules and boundaries and prove to be dependable. Keep your words and stick to rules. Thirdly, (22) _______ . Show your parents that you are capable of an independent life by taking care of your own school work and maintaining a healthy lifestyle. Finally, it's all about communication! Keep talking to your parents.
(Adapted from Friends Global)