Question: Wani mahimmin tsari na jiki a cikin samuwar rairayin bakin teku shine kaɗawar igiyar ruwa. Ana ajiye yashi akan rairayin bakin teku yayin da igiyar ruwa ta fito zuwa  bakin gaɓar tekun, kuma makamashin cikin igiyar ruwan ya watse. Wane nau'in makamashi ne aka fi amfani da shi ta hanyar igiyar ruwan don gyara siffar rairayin bakin teku?
Options:
zafi
mai yiyuwar faruwa 
sinadari
na inji
Answer: D