While in , food is broken down by powerful acids and turned into chyme.
a. esophagus
b. pharynx
c. small intestine
d. stomach

Stomach

Explanation:

The food is broken down with the help of various enzymes and acids that is released by the stomach. These acids and enzymes breakdown the food into smaller particles called as chyme( thick semifluid mass of partially digested food).

The digestive juices are formed by the gastric glands which secrete the enzyme named as pepsin, which acts on protein breaks it.

Other secretions like pancreatic juices are added to chyme in the stomach that also helps in digestion of food.

then that particular organisms become extinct.

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )