What is a primary ingredient in Ahi Sashimi?

Ahi Sashimi is a dish primarily made with Ahi tuna, which is often served raw and is typically sliced very thin to highlight the freshness and quality of the fish. The term "sashimi" specifically refers to the preparation style of raw fish, making seared rare fish the most relevant choice since it emphasizes the way the Ahi is presented. While there may be elements like sauces or accompaniments that enhance the dish, the central focus remains on the Ahi tuna itself, whether it is raw or lightly seared. This is why seared rare fish is the correct answer, as it captures the essence of what defines Ahi Sashimi.