Question is on right side of picture. How did you know that boy B knew it earlier?
Dear Student,
Saliva is a watery enzymatic secretion in the mouth of certain organisms, that helps in the break down of the food, an intricate part of the process of digestion.
Saliva is released subconsciously by the brain, as a response to delectable food smell or sight or thought. Saliva secretion is slightly increased in case a person is empty stomach rather than full.
In the above picture, the saliva is released in B because Boy B finds the dish to delectable, and also is likely to be hungry whereas the Boy A doesn't have any liking towards the dishes presented in front of him, and also is not likely to be hungry.
Regards
Saliva is a watery enzymatic secretion in the mouth of certain organisms, that helps in the break down of the food, an intricate part of the process of digestion.
Saliva is released subconsciously by the brain, as a response to delectable food smell or sight or thought. Saliva secretion is slightly increased in case a person is empty stomach rather than full.
In the above picture, the saliva is released in B because Boy B finds the dish to delectable, and also is likely to be hungry whereas the Boy A doesn't have any liking towards the dishes presented in front of him, and also is not likely to be hungry.
Regards