Which one of the following pairs of food components in human reaches the stomach totally undigested

Which one of the following pairs of food components in humans reaches the stomach totally undigested?

Which one of the following pairs of food components in humans reaches the stomach totally undigested ?

Which one of the following pairs of food components in humnas reaches the stomach totally undiagested?

Which one of the following pairs of food components in humnas reahces the stomach totally undiagested?

Which one of the following pairs of food components in humnas reahces the stomach totally undiagested?

Which one of the following pairs of food components starts its digestion only when it reaches the stomach ?

Which one of the following pair is related to midbrain of human ?

Which one of the following pair is related to midbrain of human ?