Final answer:
The words or phrases that correctly complete the statement about characteristics of all living things are that they grow, need energy, respond to stimuli, and are made of cells; being multicellular is not correct because some living organisms are unicellular.
Step-by-step explanation:
All living things share several key characteristics, and the accurate completion of the statement based on these characteristics includes that all living things grow, need energy, respond to stimuli, and are made of cells. However, not all living things are multicellular. Some organisms, such as bacteria, are unicellular, meaning they consist of a single cell. Each cell must obtain energy to fuel life's processes, grow and divide, and be able to respond to changes in the environment.
Living things are also capable of reproduction, where they give rise to offspring, and they maintain a stable internal environment through a process known as homeostasis. These traits together help define what we consider to be living organisms, whether they are single-celled like bacteria or complex, multicellular organisms like humans, plants, and animals. This diversity in life forms is a result of hundreds of millions of years of evolution.