Question Passage: Although speech is the most advanced form of communication, there are many ways of communicating without using speech. Signals, signs, symbols, and gestures may be found in every known culture. The basic function of a signal is to impinge upon the environment in such a way that it attracts attention, as, for example, the dots and dashes of a telegraph circuit. Symbols are more difficult to disciple than either signals or signs because of their intricate relationship with the receiver's cultural perceptions. In some cultures, applauding in a theatre provides performers with an auditory symbol of approval. Gestures such as waiving and had shaking also communicate certain cultural messages.

Answer the following question:

According to the passage, what is a signal?

The most difficult form of communication to describe.

A form of communication which may be used across long distances.

A form of communication that interrupts the environment.

The form of communication most related to cultural perceptions

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