Answer:
B. Brown
Explanation:
In order to understand the answer of the question we need to understand a mechanism called Camouflage first.
It refers to a process which some animals insects or other living organisms adapt by changing their body color or color combination in such a way that they are less visible to predators. This is basically a survival mechanism which increases their chances to avoid the predator and live safely.
If we talk about beetles they have three colors, Brown , Green and mixed. If beetles are living in an area where trees are highly polluted due to air pollution and have got brownish in colors, in that area brown beetles have better chances of survival because they will not be very visible to predators due to a similarity of their body color with tree colors.
In question, we are asked about Beetles that live in vegetation and vegetation is obviously greenish in color. So brown beetles are least fit in this area because they will be easily visible to predators on green vegetation that clearly lowers their survival chances.
Hope it help!
