Which of the following is an appropriate hypothesis to answer the question, why are leaves green?
A: To study the coloring of leaves, scientists grew 250 maple trees within a greenhouse over the course of six months and analyzed the structure of over 1,000 leaves.
B: Leaves are green due to the presence of chlorophyll, a pigmented compound found within the leaves.
C: Based upon the given data, which spans 25 years of research, scientists determined that leaves are green due to the presence of chlorophyll, a pigmented compound found within leaves.
D: Using the work of previous scientists and adding new data to their information, scientists have found that leaves are green due to the presence of chlorophyll, a pigmented compound found within leaves.
D. Using the work of previous scientists and adding new data to their information, scientists have found that leaves are green due to the presence of chlorophyll, a pigmented compound found within leaves.
