During which period of geologic time was the sediment of the pennington formation formed.

Pennington formation compose of carbonate rocks and marine shale that lays above the massive beds of Newman formation. It's name is taken from the geologic formation in Pennington Gap, Virginia. This formation happens around 360 to 300 million years ago specifically around the Carboniferous period.

Option (A) is the correct answer.

Explanation:

Ionic bonds are the bonds that are formed by transfer of electrons from one atom to another.

For example, NaCl is an ionic compound because sodium donates its one valence electron to the electronegative chlorine atom.

Thus, we can conclude that one atom pulls an electron from another atom best describes how an ionic bond forms.