Mobile advertisers care about driving physical store traffic because vast majority of sales still occur in physical stores. The physical stores have a lot of people making them a ready market. The mobile advertisers therefore become more interested in the physical store traffic.
C. It’s the most intelligent answer I’m stuck between that or B but I’m almost positive it’s c
The best answer is D, birds.
For more information and details on the way a bird's respiratory system works:
https://asknature.org/strategy/air-flow-patterns-facilitate-efficient-gas-exchange/
