Final answer:
The secondary oocyte is formed after meiosis I in the ovary and will complete meiosis II upon fertilization to become an ovum.
Step-by-step explanation:
The secondary oocyte is a cell that is formed after meiosis I in the ovary. During the process of oogenesis, the primary oocyte undergoes the first meiotic division to form the secondary oocyte and a polar body. The secondary oocyte then gets arrested in metaphase II and will only complete meiosis II if fertilization by a sperm occurs. The resulting cell post-fertilization is the ovum, a haploid female gamete. If not fertilized, the secondary oocyte disintegrates. Therefore, the correct answer to the student's question is option 1, a cell that is formed after meiosis I in the ovary.