Send help asap this is so important please

A

Explanation:

you were right the first time.

Banded iron formations (also known as banded ironstone formations or BIFs) are distinctive units of sedimentary rock consisting of alternating layers of iron oxides and iron-poor chert. ... Almost all of these formations are of Precambrian age and are thought to record the oxygenation of the Earth's oceans.

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.