<span>Body Temperature Regulation
</span><span>Disease Protection and Healing
</span>Carbon dioxide and oxygen transportation
<span>Nutrient and Waste Product Transport
</span><span>Hormone Delivery
</span>
Answer:
Answer below------Please mark me brainliest
Explanation:
It would be D as the symptom would be vision. Difficultly sleeping would be a neurological related condition along with sinus headaches. Failing grades wouldn't generally warrant a trip to the doctor while the symptom of eye squinting would be directly vision.
Vision = eye specialist
Hope that helps :)
