A opinion is what somebody thinks about an object, place,or thing.
The structure of an opinion is APE. A is for Assertion, P is for Proof, and E is for Explain/Example. For example: Should the older brother get the soft toy, or the younger brother.
Assertion is telling your opinion. Proof is giving the evidence for your opinion. Explain/Example is explaining your evidence, or proof.
Opinions are used for making a judgement by human beings.