In the Context of Tinbergen's "Four Levels of Analysis," Which

Multiple Choice

In the context of Tinbergen's "four levels of analysis," which of the following would be considered a question about proximate cause?

A) How does a trait allow an animal to live longer?
B) Is this a trait that is shared by other species that are closely related?
C) Does a trait allow a species to have more offspring?
D) At what age does a trait emerge, and how does it develop?