Question: Rolanda tana noman tumatir a lambunta. Ta tara tulin taki, kuma ta riƙa zuba takin a kusa da tumatirin don taimakawa zuba wajen musu taki. Takin gargajiya sharar gida ce ta ƙwayoyin halitta da aka narkar da su ta hanyar wasu ƙananan halittu da ke cikin iskar oxygen a inda ake adanawa kulawa, da kuma zuba su wuri. A kan me Rolanda ta dogara da sosai domin takinta na gargajiya ya yi aiki?
Options:
masu samarwa
masu ci 
masu cin abinci a wajen da ake zubar da shara
masu narkarwa 
Answer: D