Which arrangement of atoms represents a group which is characteristic of organic i need explanation of why answer in read is correct

You had the right idea about the other option, generally if something is organic it has some sort of atom of carbon within the molecular compound so that limits between the two answers.

The compound is COOH meaning it is a CO² + H (Carbon dioxide + hydrogen)

It becomes an acid because the Hydrogen is a negatively charged ion and makes the compound acidic when bonded to the O

This is a type of acid that also occurs is amino acids, the building blocks of life.

Tell the option first