Answer:
know morphological rules.
Explanation:
Morphological rules -
Morphology simply refers to the study of words , formation of words and the link between the words , is referred to as Morphology.
Morphological rules consists of the rules , which are responsible to make a proper word and sentence.
As the child grows , he tries to adapt to the morphological rules in order to learn new words and make sentences .
Hence, from the given scenario of the question,
The correct term is Morphological rules .