In a Physiology Experiment, a Zoologist Observes That One Connective

In a physiology experiment, a zoologist observes that one connective tissue (A) has much greater tolerance for repeated bending than another (B) . The most likely explanation for this difference is that the

A) extracellular matrix of A contains a greater proportion of collagen fibres.
B) extracellular matrix of A contains a greater proportion of elastin fibres.
C) cells in A bind more strongly to the extracellular matrix.
D) complex polysaccharides in the extracellular matrix of A form a more flexible gel.
E) extracellular matrix of A contains a greater proportion of fibronectin.