Question: the spread of grasslands and what have been strongly linked?
Answer: However, an examination of mammalian teeth suggests that it is the open, gritty habitat and not the grass itself which is linked to diet changes in mammals, giving rise to the "grit, not grass" hypothesis.
A single-select problem: Is the question answered in a satisfactory fashion?

Options:
(A). yes.
(B). no.
(B).