The answer would be either C or D
A. Calvin cycle is the correct answer
C would most likely be the correct answer: think of Darwin's finches and their varying bill lengths. This is all due to what they can eat. The same would apply to the Hummingbirds in this diagram: there is an abundance of short and long tubed flowers, thus causing disruptive selection in the medium sized bills (as they wouldn't fit properly).
Answer:
C. Cell Membrane and Cell Wall
Explanation:
The example illustrates visual
imagery
Visual imagery is a memory
technique in which mental pictures are constructed when reading a text or when learning
new information in order to be able to better recall the information later. Visual
Imagery involves generating, examining, and manipulating recalled visual images.
The example given in the question illustrates visual imagery because it contains
good descriptive information about a bird in which mental images can be
constructed when reading the text and this will make the information easier to
recall.