The correct answer is option 'A': 1.

During the process of meiosis in humans, the number of egg cells produced is indeed one. Meiosis is a specialized form of cell division that occurs in the reproductive cells, also known as gametes, in order to produce haploid cells with half the number of chromosomes. In humans, the gametes are the sperm cells in males and the egg cells (or ova) in females.

Here is a detailed explanation of why the number of egg cells produced as a result of meiosis in humans is one:

1. Meiosis I: During the first phase of meiosis, called meiosis I, the diploid cell (containing two sets of chromosomes) undergoes DNA replication, resulting in the formation of two identical sister chromatids for each chromosome. Then, homologous chromosomes pair up and undergo crossing over, where genetic material is exchanged between non-sister chromatids. This genetic recombination adds to the genetic diversity of gametes.

2. Meiosis II: After the completion of meiosis I, the cell enters meiosis II. Unlike in mitosis, the DNA does not replicate again. In this phase, the sister chromatids separate, resulting in the formation of four haploid cells. However, it's important to note that only one of these cells will become a functional egg cell, while the other three cells are called polar bodies and eventually degenerate.

3. Polar bodies: The three polar bodies formed during meiosis II are smaller cells that do not have the ability to be fertilized. They contain genetic material but are not functional egg cells. The polar bodies typically degenerate and are eventually reabsorbed by the body.

4. Functional egg cell: The one remaining cell from meiosis II is the functional egg cell. It contains half the number of chromosomes as the original diploid cell and is ready to be fertilized by a sperm cell during sexual reproduction.

In summary, the number of egg cells produced as a result of meiosis in humans is one. The other three cells formed during meiosis II are polar bodies, which are not functional egg cells and eventually degenerate.