Final answer:
The answer to the festival of Japanese animation is A) Anime, a style of Japanese animation aimed at a wide audience.
Step-by-step explanation:
The correct answer to the question is A) Anime. Anime is a style of Japanese film and television animation, typically aimed at both adults and children. Unlike manga, which refers to Japanese comic books and graphic novels, anime is animated and often features colorful graphics, vibrant characters, and fantastical themes. Going to an anime festival would imply watching and celebrating this form of animation. J-pop relates to a genre of music in Japan and sushi is a famous Japanese dish, neither of which relate to the context of a festival regarding animation.