Which of the following is an example of an organism that reproduces asexually?

Bacteria reproduce asexually primarily through a process called binary fission. In binary fission, a single bacterial cell divides into two identical daughter cells, effectively doubling the number of cells. This method of reproduction does not involve the fusion of gametes, which is a characteristic of sexual reproduction.

While yeast (which is a type of fungus) primarily reproduces asexually through budding, it can also undergo sexual reproduction under certain conditions, making it not exclusively an example of asexual reproduction. Mammals typically reproduce sexually and do not have a form of asexual reproduction. Plants can reproduce asexually through methods like vegetative propagation, but many also reproduce sexually through seeds or flowers.

Hence, the most unambiguous example of an organism that exclusively reproduces asexually is bacteria.