Answer:
The correct answer will be- secondary oocyte.
Step-by-step explanation:
Oogenesis is a complex process which forms the female gametes or egg cell in the females.
The oogensis process begins in the womb before the birth of the child which produces diploid primary oocytes. The primary oocyte gets arrested in meiosis I in womb which produces one secondary oocyte by meiosis II during ovulatory phase of the ovulation each month.
The secondary oocyte also gets arrested at metaphase II which travels through Fallopian tube in females to reach uterus. Meiosis II will end only if the egg gets fertilized. This is the stage detected by the doctor in the given question.
Thus, secondary oocyte is the correct answer.