Question: A student observes cells in an object by using a microscope. The student thinks that the object was part of a living thing. Which statement explains why cell theory can be used to support the student's thinking?

  Options: 
 A. Cell theory was developed using a microscope.
 B. Cell theory was developed to study living things.
 C. Cell theory states that all living things are made of cells.
 D. Cell theory states that scientists may classify things as living or nonliving.
Answer: C