Shivering is . Multiple Choice the rapid, voluntary contraction of smooth muscles the rapid, voluntary contraction of skeletal muscles the rapid, involuntary contraction of smooth muscles the rapid, involuntary contraction of skeletal muscles

The correct answer is - involuntary contraction of the skeletal muscles.

Explanation:

Shivering or the chills that is involuntary action of body to maintain the homeostasis by controlling the body heat or maintaining body temperature it can cause by environmental change or the infection.

It is rapid involuntary contraction and relaxation of the skeletal muscles whenever body needs to produce heat when ti feels cold. Skeletal muscles are act as thermal effector in such cases.

Thus, the correct answer is - involuntary contraction of the skeletal muscles.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

a = executive branch; b = judicial branch