National tree of uae importance and uses of ghaf tree???

Whay is the following best defines climate

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

Plz ! ive been stuck on this forever