contestada

Which sentence is correct?
A. Favoring areas where blood vessels are nearer to the skin's surface, mosquito
bites frequently occur on people's ankles and wrists.
B. Favoring areas where blood vessels are nearer to the skin's surface,
mosquitoes frequently bite people's ankles and wrists.
This is a question from IXL btw. It’s 7th grade IXL KK.3