Answer: Smell and vision
Explanation: Most important part of the frog's brain corresponds to the human brain. The medulla in frogs brain helps in digestion and respiration.
The cerebellum controls the body posture and muscle coordination in frogs.The olfactory lobe of frogs helps them to smell and the optic part of the brain is used to see objects.
It helps them to smell and search for breeding area. They are able to see 360 degrees which helps them to hide from predators.