Choose the option A, B, c or D that best answers the question about the passage:

"Ever since humans have lived on the earth, they have made use of various forms of communication. Generally, this expression of thoughts and feelings has been in the form of oral speech. When there is a language barrier, communication is completed through sign language in which motions stand for letters, words, and ideas. Tourists, and the local people unable to make themselves understood by each other through speaking or writing have had to use this form of expression. Many of these symbols of whole words are very lively and exact and can be used internationally, spelling, however, cannot compare with them.
 Body language sends ideas or thoughts by certain actions, either intentionally or unintentionally. A wink can be a way of showing that the party is only joking. A nod means approval, while shaking the head indicates a negative reaction.
 Other forms of nonlinguistic language can be found in Braille (a System of raised dots read with the fingertips), signal flags, Morse code, and smoke signals. Road maps and picture signs also guide, warn, and instruct people.
 All in all, while words are the most common form of communication, other Systems and techniques nonlinguistic also play role of expressing human thoughts and feelings."

2. Which of the following statements is NOT true?

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