What are some examples of unaided symbols?

Unaided symbols refer to communication methods that do not rely on any external tools or devices, and instead, utilize the individual's body or naturally available resources for expression. Gestures and manual sign language are prime examples of unaided symbols as they depend solely on the user's physical actions and movements to convey meaning.

Gestures can include any physical movements, such as waving or nodding, that communicate messages effectively without additional support. Manual sign language uses specific hand shapes and movements to represent words or concepts, providing a structured form of communication that is accessible without any aids.

The other options involve unaided communication but either incorporate external symbols or tools, which does not fit the definition of unaided symbols. For instance, pictures, photographs, text, and speech typically involve some form of external representation or technology, while objects and artifacts may act as tangible items but do not inherently classify as unaided forms of communication like gestures and sign language do.