PLEASE HELP

What are some of the challenges in testing for and identifying poisons?

C. 1s22s22p63s23p43d104s24p5

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.

Answer is (d)a brainliest would be appreciated