Sharon, who is just learning to speak, says words like da-da, kitty, ma-ma. This is not unusual because, whatever the language, when children begin to speak they tend to mostly use:a. nouns.b. adverbs.c. verbs.d. adjectives.
Sharon as a child who is just learning how to speak will tend to use nouns, this is because majority of the things she's familiar with are names. Starting from the parents, items in the house, places and so on.
