away , ▁then ▁continues ▁arg uing ▁throughout ▁the ▁rest ▁of ▁the ▁challenge , ▁ultimately ▁losing ▁ ▁and ▁even ▁an gr ily ▁stating ▁that ▁she ▁wants ▁to ▁leave ▁and ▁go ▁home . ▁Despite ▁Alex is ▁losing ▁the ▁most ▁water ▁with ▁, ▁Karl ene ▁has ▁the ▁worst ▁run ▁of ▁the ▁day , ▁mainly ▁due ▁to ▁her ▁lack ada is ical ▁attitude ▁and ▁arg uing ▁with ▁Andrew . ▁During ▁his ▁run , ▁Br andon ▁attempts ▁to ▁quit ▁after ▁the ▁initial ▁straight away , ▁but ▁Andrew ▁ref uses ▁to ▁let ▁him ▁and ▁he ▁ultimately ▁comple tes ▁the ▁challenge ▁with ▁only ▁ ▁lost . ▁Best ▁Per former : ▁Des cy ara , ▁who ▁lost ▁the ▁least ▁amount ▁of ▁water . ▁Wor st ▁Per former : ▁Despite ▁Alex is ▁losing ▁the ▁most ▁amount ▁of ▁water ▁and ▁Br andon ▁threaten ing ▁to ▁quit , ▁Karl ene ' s ▁run ▁was ▁de emed ▁the ▁worst , ▁made ▁even ▁worse ▁when ▁she ▁argued ▁with ▁Andrew , ▁y elled ▁obsc en ities ▁at ▁him ▁and ▁had ▁the ▁most ▁care less ▁attitude ▁of ▁all ▁( even ▁more ▁care less ▁than ▁Canada ' s ▁Wor st ▁Driver ▁ 1 2 ▁" w inner " ▁K ry stal ▁McC ann , ▁if ▁that ' s ▁even ▁possible ). ▁ ▁With ▁no ▁one ▁else ▁des iring ▁to ▁gradu ate , ▁Karl ene ▁is ▁short list ed ▁on ▁the ▁basis ▁of ▁her ▁improvement ▁in ▁challeng es ▁and ▁her ▁ability ▁to ▁now ▁drive ▁on ▁the ▁highway ▁alone ; ▁however , ▁the ▁exper ts ▁call ▁her ▁desire ▁to ▁actually ▁continue