W is the point where blood filtration starts in a nephron which makes option A the most appropriate choice.
<h3>What is a Nephron?</h3>
This is defined as the microscopic structural and functional unit of the kidney.
The renal artery carries blood from your heart to your kidneys during which the process of blood filtration starts immediately.
Read more about Nephron here brainly.com/question/242658
If i’m not wrong the main macronutrients are fats carbs and protein, i don’t know if that’s for teens but those are the main macros
A) Hematuria
Hope this helped...:)
