What type of muscle aids in the digestion of food apex?

the right answer is smooth muscle

Explanation:

The correct answer is "a layer of smooth muscle".

In an individual's mouth, gut, and the small intestine, the mucosa, which holds tiny glands, which secrete juices in order to assist in digesting food. The digestive tract also holds a layer of smooth muscle, which aids in breaking down food and move it along the digestive tract.

All the given elements belong to the second period of the periodic table

Explanation:

Let's locate the elements with the given atomic numbers:

Z = 3, this corresponds to lithium (Li);Z = 4, this corresponds to beryllium (Be);Z = 5, this corresponds to boron (B);Z = 6, this corresponds to carbon (C);Z = 7, this corresponds to nitrogen (N);Z = 8, this corresponds to oxygen, (O);Z = 9, this corresponds to fluorine, (F).

Now notice that each of these 9 elements can be found in the same row of the periodic table. This is period 2. We may then summarize that all of these elements belong to the same period, period number 2.