ANSWER is c
HOPR THIS WILL BE HELPFUL
It would be adaptation because the finches live in different islands and each have different weather and resources
Answer:B
Explanation:
Given
Wavelength of light 
Screen distance 
First fringe is at a distance 
No of lines per mm is given by N

where d=slit width
From N-slits Experiment


Position of bright fringe is given by



Put the value of
in eq. 1

Therefore 

for 


