Alert - correct answer should be yeast.

Option 1, an Albino mouse, is not correct. Sequencing of the entire mouse genome was not completed until 2002.

Option 2, yeast, is the correct answer. The first organism to have its entire genome sequenced was a form of yeast, specifically Saccharomyces Cerevisiae. This feat was accomplished in 1996.

Option 3, a human being, is not correct. The Human Genome Project, which was aimed at sequencing the entire human genome, was not completed until 2003.

Option 4, Plasmodium vivax, is also not correct. Plasmodium vivax is a species of malarial parasite, and its genome was not sequenced till 2008.

Therefore, the yeast Saccharomyces Cerevisiae was the first organism to have its genome completely sequenced in 1996.