What would be ascent if you walked over or up an hill

Which flexible structure that supports the nerve cord and led to the backbone

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand

Which description provides the best objective summary of the article in the passage?