-Which of the Following Factors, When Used to Label the Horizontal

Multiple Choice

-Which of the following factors, when used to label the horizontal axis of the previous graph, would account most directly for the shape of the plot?

A) spongin concentration (gm/unit volume)
B) rate of cribrostatin synthesis (molecules/unit time)
C) number of pores per sponge
D) number of spicules per sponge
E) number of choanocytes per sponge