JewelWeed = Smooth-edged, Single leaves, Translucent, Juicy Stem, found near water(Soggy)
Prevents Rash if applied quickly after poisoning
Aloe Vera =Thick, Succulent leaves, clear viscous gel, Found in dry (Arid Conditions)
Soothes Rash after it appears.
Hikers first priority is to prevent rash, second priority is to soothe rash
From the above information, if Jewelweed is applied immediately it prevents rash, and if aloe vera is applied after a few days(If rash Appears)
From the options, 4th options is best for first priority as it applies Jewel Weed in an hour after poisoning
3rd option is best for second priority as it soothes the rash (if it appears) after a few days (4 in this case)