The kidneys have the important job of_______
a. reabsorbing water into the bloodstream
b. filtering the blood to remove wastes
c. breaking down food mechanically
d. producing bile to help digest fats
b. filtering the blood to remove wastes
b. filtering the blood to remove wastes
The correct answer is b. filtering the blood to remove wastes.
To arrive at this answer, you can follow these steps:
1. Start by understanding the function of the kidneys. The kidneys are vital organs of the excretory system responsible for filtering the blood and removing waste products from the body.
2. Consider the provided options and eliminate choices that are not related to the kidneys' function.
- Option a. reabsorbing water into the bloodstream: Although the kidneys play a role in water regulation, it is not their primary function.
- Option c. breaking down food mechanically: The kidneys are not directly involved in the mechanical breakdown of food.
- Option d. producing bile to help digest fats: The production of bile occurs in the liver, not the kidneys.
3. Based on the remaining options, it becomes clear that option b. filtering the blood to remove wastes is the most accurate description of the kidneys' important job.
Therefore, the correct answer is b. filtering the blood to remove wastes.