Task: Class Definition Understanding (ontology: Earth_Environment/EnvironmentOntology)

Which of the following definitions best describes 'environmental system determined by a material'?

A. An environmental system which has its properties and dynamics determined by a biofilm on a surface which is exposed to saline materials.
B. An environmental system which has its properties and dynamics determined by a biofilm on a surface which is exposed to non-saline materials.
C. An environmental system within which an environmental material strongly influences the system's composition and properties.
D. An environment which is subject to temperate environmental conditions.

Answer: An environmental system within which an environmental material strongly influences the system's composition and properties.