Question

Which of the following is an example of an appeal to logic? It is good to support your siblings when they feel happy. This is a great way to make friends with your brother or sister, which is important; My brother is the most important person in my life. He is my best friend, and whenever he laughs, I can't help feeling happy, too; My brother has a right to smile and laugh whenever he wants. It makes him feel good, and the experience of joy is wonderful; or Every time my brother smiles, he laughs thirty seconds later. My brother just smiled. Therefore, he will laugh in under a minute.

Answer 1

I believe the correct answer is Every time my brother smiles, he laughs thirty seconds later. My brother just smiled. Therefore, he will laugh in under a minute.

All the other statements are of subjective nature. The claims they make are not verifiable in any way. They can't be regarded as either true or false, nor is there a cause and effect relation between their parts. Only the fourth statement has a form of a syllogism, where the conclusion stems from premises which are presumed to be true.