Which Factor Would Not Be a Problem for a Scientist

Multiple Choice

Which factor would not be a problem for a scientist wishing to study reasons for the existence of latitudinal gradients in species diversity?

A) Latitudinal gradients emerge over evolutionary time scales.
B) Spatial scales are very large, limiting or preventing experimentation.
C) Little is known about the general patterns of latitudinal diversity of species.
D) Many factors, such as climate, geography, and productivity, vary with latitude.
E) Different species groups may vary in latitudinal diversity for different reasons.