Jenna, a second-grade teacher in a public school, teaches a diverse group of students from different cultural backgrounds. She likes her students and has a very positive impact on them. She has also been successful in creating a classroom community. She requests the school management to move her to the next grade along with the same batch of students. In this scenario, Jenna's request is an example of _____.​
a) Vertical Team Teaching
b) Grade Advancement
c) Classroom Cohesion
d) Looping