Which part of the digestive system is primarily involved in absorbing nutrients?.

The small intestine absorb most of nutrients in your food, and your circulatory system passes them on to other parts of your body to store or use.

The small intestine.

Explanation:

The small intestine, made up of three parts (duodenum, jejunum, and iluem), is responsible for dissolving foods and absorbing nutrients through the use of special enzymes.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.