Wagner composed an opera titled Tristan and Isolde. This opera was about: A. romance anc forbidden love B. two brothers. C. explorers. D. neighbors.

## Step 1<br />The problem is a multiple-choice question about the opera "Tristan and Isolde" composed by Richard Wagner. The question asks us to identify the main theme of the opera.<br />## Step 2<br />The opera "Tristan and Isolde" is a tragic love story that revolves around the theme of forbidden love. The story is about Tristan, a knight, and Isolde, a princess, who fall in love with each other despite the fact that their love is forbidden due to the feud between their families.<br />## Step 3<br />Given the options, the one that best describes the theme of the opera is "romance and forbidden love".