Q: What is the largest mammal on earth?


Read this paragraph and choose the correct option from the provided answers:

Biological organization exists at all levels in organisms. It can be seen at the smallest level, in the molecules that make up such compounds as DNA and proteins, to the largest level, in an organism such as a blue whale, the largest mammal on Earth. Similarly, single celled prokaryotes and eukaryotes show order in the way their cells are arranged. Single-celled organisms such as an amoeba are free-floating and independent-living. Their single-celled "bodies" are able to carry out all the processes of life such as metabolism and respiration without help from other cells.

 Choices:

- tiger shark

- water buffalo

- giraffe

- blue whale


A:
blue whale