Question

Reflex actions provide a survival advantage because they ______.

Options

• are controlled by the cerebrum.

• are controlled by the medulla oblongata.

• require no conscious thought, allowing rapid responses.

• always involve the spinal cord.

Answer 1

Reflex actions provide a survival advantage because they require no conscious thought, allowing rapid responses.

Explanation:

Reflex actions are automatic, quick, and involuntary responses to stimuli that help protect the body from harm; for example, pulling your hand away from a hot object. These actions do not involve conscious thought and are controlled by the spinal cord, not the brain, allowing the body to respond rapidly to danger. This gives reflex actions a survival advantage by minimizing injury.