Which one of these was not a beach landing site in the Invasion of Normandy?

The answer is Silver. This is because Silver was not one of the designated beach landing sites during the Invasion of Normandy, also known as D-Day, which took place on June 6, 1944, during World War II. The designated landing sites were codenamed Utah, Omaha, Gold, Juno, and Sword, and were heavily fortified by German forces. Silver is not historically associated with being one of these landing sites and is therefore not a correct option.