Which of the following resources provides opinions from specialized courts?

The correct answer is West's Bankruptcy Reporter, as it specifically publishes opinions from bankruptcy courts, which are specialized courts. This resource compiles decisions from various bankruptcy proceedings, making it a valuable tool for legal professionals seeking case law directly related to bankruptcy matters.

The other sources mentioned serve broader purposes. Federal Supplement compiles opinions from federal district courts, but it does not focus exclusively on any one area of law, such as bankruptcy. United States Reports is the official reporter for the Supreme Court of the United States, providing opinions from the highest court in the nation but not from specialized courts like bankruptcy. Therefore, while all the resources listed have their importance in legal research, West's Bankruptcy Reporter specifically targets the unique needs and cases arising from bankruptcy law.