Which statement is an example of a scientific theory? a. hummingbirds do not like the color white because they visit other colored flowers more often. b. all living organisms are composed of one or more cells, which came from pre-existing cells. c. the earth is the third planet from the sun and has one moon, which orbits the earth. d. the amount that caffeine affects a person's heart rate differs based on the person's age.

The correct answer is option B, that is, all living organisms are composed of one or more cells, which came from pre-existing cells.

A scientific theory refers to a well-substantiated illustration of some characteristic of the natural world, on the basis of a number of facts, which have been repeatedly confirmed via the experiment and observation. Such fact-supported theories are not hypotheses, however, are reliable explanations of the real world.  

During the late 1830s, the zoologist Schwann and the botanist Schleiden were examining tissues and postulated the unified cell theory. According to the unified cell theory, all the living things comprises of one or more cells, the cell is the fundamental unit of life, and the new cells originate from the pre-existing cells.  

the right answer sense nobody can get it right is    C    (on the test) all living organisms are composed of pu one or more cells duh.

i it is d i hope it