B. His beloved will always be beautiful
In this passage, summer symbolizes his beloved's beauty. The context clues that tell you this is that they "will not fade/Nor lose possession of that fair thou ow'st". During this time period the word fair often referred to a person's looks. He says that summer is eternal meaning that it will never end. A does not answer the question about symbolism. A symbol is a concrete thing that represents something else. Option A does not indicate what the summer symbolizes. This is the same problem with Option D. Option C is also not correct, because we all know that people do not live forever.
