Answer:
True.
Step-by-step explanation:
Sign and Signifier must act in a unitary way so that efficient, full and understandable communication is possible. This is because the sign cannot act alone to establish a communication, being necessary the presence and interaction of several signs so that the message is coherent. Each sing, however, must be established in connection with the signifier, without the presence of "slippage" between them.
An example of this can be seen in the word "home". This word is a sign, since it has meaning, but in order to pass a message and be inserted into an efficient communication, it needs the presence and interaction of other signs.