I think the correct answer is A
Answer:
The muscularis externa layer
Explanation:
The muscularis externa layer has three layers of muscle. An innner oblique layer , a middle circular and an external longitudinal layer. The contraction of these muscle layers help to break up the food mechanically.
The last answer choice is the answer.
<span>During this event, the stomach virus caused water to leave the cells, leaving the cell at risk of death from having too much of other substances, such as salt. Having sports drinks can bring the water and salts levels back into balance by allowing isotonic conditions to be re-established.</span>
