It appears that the girls in Mrs. Jaime's eighth-grade science class have been somewhat apprehensive about digging in the marsh area to collect data. Some have complained about the project being messy and have started to allow the boys in the group to take over the problem. This has created a disturbance between the boys and girls and some arguments have started within the groups. Mrs. Jaime has repeatedly tried to stop the fighting, but she has been unable to use her authority to re-direct them to the task at hand. She should be aware that students' social-emotional development at this age often tends to make them -

A. Uncomfortable in situations where they are required to share their thoughts and feelings with their peers
B. Unsure of how to behave in new social situations
C. Unhappy when they are criticized by adults
D. Want to challenge adult authority