In Fifth Grade Last Year,Elena Was a Happy,easy-Going Student

In fifth grade last year,Elena was a happy,easy-going student. Now that she's moved to junior high school and begun sixth grade,she's becoming increasingly anxious and uptight. Three of the following alternatives are probable reasons for her growing anxiety. Which alternative is least likely to be true?

A) It's harder to get the good grades she was used to getting in elementary school.
B) Her junior high school teachers want to know more about her than her fifth-grade teacher ever did.
C) Now that she's reached puberty,she's uncomfortable with the many ways in which her body is changing.
D) Assignments require more independence and self-reliance,and it's up to her to seek help if she needs it.