Final answer:
The molecule O-O-O would be classified as homoatomic and polyatomic since it is composed of only oxygen atoms and includes more than one atom.
Step-by-step explanation:
A molecule represented by O-O-O must be classified as homoatomic and polyatomic. The term 'homoatomic' refers to molecules composed of only one type of element, which in this case is oxygen (O). The term 'polyatomic' means consisting of more than one atom. Considering that this molecule is composed entirely of oxygen atoms but includes more than one atom, the correct classification would be homoatomic and polyatomic.