Answer:
In the given question, Lily is exhibiting a need for energy.
Step-by-step explanation:
All the living species require energy in order to carry out the procedures of life. Energy refers to the capability to perform any sort of work. The work like writing, walking, and thinking is fueled by energy. In order to grow and reproduce, and to conduct the procedures of life, all the living species require energy.
The source of energy varies among the species, for example, in the case of human beings, the source of energy is the food one consumes. Thus, in the given case, the characteristic of life exhibited by Lily is the need for energy.