Q2.21. Examine the two graphs on the right, paying close attention to their x and y axis labels. Which statement below is supported by these data? a.Both graphs reflect density-dependent

disease transmission. b.Both graphs reflect frequency-dependent disease transmission. c.Disease Q (top) displays density-dependent transmission, while Disease Z (bottom) displays frequency-dependent transmission. d.Disease Q (top) displays frequency-dependent transmission, while Disease Z (bottom) displays density-dependent transmission.