The first option is correct hope this helps
<span>Going to a concert, getting a haircut, and going to the doctor are examples of decisions. You decided to do all of those things - so it's your own decision that you willingly made. Services are what those people provide for you - musicians play music and that is their service, the hairdresser cuts your hair and that is his or her service, and the doctor treats you as a part of their service. Goods are things that you buy.</span>
The blood (circulatory system) carries oxygen to your lungs (respiratory system). Oxygen binds to the hemoglobin molecule in your blood and is carried back to the heart, then pumped out to the other parts of the body.
Hope this helps :)
