According to the Nature article about the Grants, the type of evolutionary divergence that caused a shift in the shape of beaks in Darwin’s finches starting in 2005 is called .
a. environmental displacement
b. evolution by natural selection
c. balancing selection
d. character displacement

Option a        

Explanation:

In simple words, environmental displacement refers to the threat that occurs due to changes in geographical positions of various elements constituting the environment. This problem happens due to environmental migration that is happening due to degrading human activities.

The article referring in the given case was actually depicting this issue of high level environmental migration which will ultimate affect the whole human race and other living beings.

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