What is a benefit of multicellular organisms that is not shared by single-celled organisms?

All cells in a multicellular organism can perform all metabolic functions, thus maximizing metabolism.

Single-celled organisms can form tissues.

Single-celled organisms are simpler and thus less likely to experience breakdown or disease.

Cells cannot differentiate.

Multicellular

Explanation:

Cells are considered the fundamental units of life All living organisms are made up of one or more cellsUnicellular organisms, like amoebas, consist of only a single cellMulticellular organisms, like people, are made up of many cellsThe cells in complex multicellular organisms like people are organized into tissues, groups of similar cells that work together on a specific taskOrgans are structures made up of two or more tissues organized to carry out a particular function, and groups of organs with related functions make up the different organ systems

Hence the benefit of multicellular organisms that is not shared by single-celled organisms is populations of cells in a multicellular body can be specialized for specific functions