There will be a defect. Some legs will most likely be longer than others.
The statement suggests that the phenomena observed are more than just mere opinion and they can be better understood if experiments are designed to test them and the results of these experiments are analyzed.
I've looked us up ever since you posted it the only thing I can come up with is letter A because it talks a lot about Mountain chains that talks a lot about the ocean floor and the Hawaiian stuff so try a
The answer is deletion mutation
