<span>Answer: A) Dark moths had a survival disadvantage in industrial Dorset.
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This question can be solely answered using the data you're given! The graph is broken down by place, and then moth type.
In forested Birmingham, the green bar for the light moth is much higher than the orange one for the dark moth. That means the light moth had a survival advantage (eliminating option D) and the dark moths had a survival disadvantage (eliminating option C).
In industrialized Dorset, the green bar for the light moth is much lower than the orange one for the dark moth. That means the light moths were at a survival disadvantage (eliminating option B). The dark moths were are a survival advantage, but option A says "disadvantage," which is clearly wrong! That makes A your answer.
A) Dark moths had a survival disadvantage in industrial Dorset.
Dark moths had a survival disadvantage in industrial Dorset. After the introduction of industry, the dark moth population remained approximately the same in Dorset to Birmingham. However, the light moths in the rural area still had a much larger population.
