The correct answer would be A. Carrots
The answer is number 5: defends the body against pathogens. Red blood cells do not defend the body, white blood cells do. Red blood cells' purpose is to carry oxygen to the rest of our body.
The spot where your optic nerve connects to your retina has no light-sensitive cells, so you can't see anything there. That's your blind spot.
It's called the target heart rate
In order to have an effective workout, Most of health experts recommend that we target our average heart rate from 55 % to 85% of our maximum heart rate for at least 20 - 30 minutes
It will greatly lower the risk of heart disease and increase metabolism
