Which of the following features account(s) for the greater acuity that occurs in cones, relative to the rods?
a. Different cone opsins have different absorbance maxima for wavelengths of light.
b. There is little convergence in the cone system.
c. Cones are less sensitive (require a stronger stimulus) than rods.
d. All of these contribute to acuity.
e. None of these influence acuity.
B
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