Maximally developed follicle among the following is
1) graafian follicle
2)tertiary follicle
3)secondary follicle
4) primary follicle

Dear Student, Oogonia divides by mitosis forming primary follicle. The primary follicles are surrounded by more layers of granulosa cells called secondary follicles, they further changes into tertiary follicle. The tertiary follicle is further converted into mature follicle or Graafian follicle. So, correct option is (1). Regards