Answer:
Answer B is correct
Step-by-step explanation:
Choice A is written as if the mosquito bites favor areas where blood vessels are nearer to the skin's surface. However, choice B is written as if the mosquitoes favor the areas where blood vessels are nearer to the skin's surface.
The modifier "favoring areas where blood vessels are nearer to the skin's surface" makes more sense when it describes the mosquitoes- not the mosquito bites.