Final answer:
Culture is based on symbolic systems, with language being the most important one. Language is a system of symbols used for communication and culture transmission.
Step-by-step explanation:
The most important symbolic system that culture is based on is language. Language is a system of symbols that people use to communicate and transmit culture. It includes letters, words, pictographs, hand gestures, and even sign language. Through language, people learn social and cultural norms, and it plays a crucial role in shaping their perceptions of the world.