B no explanation it’s pretty obvious lol
During the digestion process, the first step would be mastication, lubrication with the saliva, and later on is being formed into a bolus. Bolus is the term used for food substance that is turned into small balls. When the bolus is formed, this is then pushed or moved to the stomach.
You forgot to put the answer choices, but by process of elimination the choice that shows someone living a healthy, drug-free live will be correct.
