What design feature of language corresponds to the use of unique combinations of representations to produce an infinite number of utterances?

The four aspects of preoperational thought include centration, focus on appearance, irreversibility, and ______

Fill in the blank with correct word

Another term for the primary visual cortex is

A) area 51. B) the striate cortex. C) the opercular cortex. D) the calcarine cortex. E) the chiasmic cortex.