In humans, ovaries after birth contain:

Explanation

Option A: Oogonia are the immature egg cells that are present in the ovaries before birth. They start to develop into primary oocytes during fetal development, but they do not mature until puberty. Option B: Primary oocytes are surrounded by a layer of cells called the granulosa cells. The granulosa cells provide nutrients and support for the primary oocyte. When a girl reaches puberty, one or two primary oocytes mature each month and are released from the ovaries during ovulation. The released primary oocyte is then called a secondary oocyte. So, the ovaries after birth contains primary oocytes. Option C: Secondary oocytes can be fertilized by sperm. If fertilization occurs, the secondary oocyte will develop into an embryo. Option D: Ova are fertilized eggs. They are not produced in the ovaries. Ova are produced when a secondary oocyte is fertilized by sperm.