Final answer:
Typically, by age two, a child will know and be able to name major body parts. This skill is more common at this age than using pronouns correctly or formulating three-word sentences, which usually happens later in their language development process.
Step-by-step explanation:
The most typical language development of a two-year-old child, from the options you provided, would be b) knowing and naming major body parts. While the language acquisition timeline varies for each child, generally by two years of age, a child's vocabulary ranges between 50-200 words, including names of familiar objects or events like body parts. The use of pronouns and the formation of three-word sentences usually happen at a later stage in their linguistic development.
At this age, they are gaining an understanding of the specific rules that apply to their language. Children communicate pre-linguistically through gestures, gradually progressing to cooing and babbling before speaking identifiable words.
It's important to know that all children develop at their own pace, so some two-year-olds could potentially exhibit the skills listed in the other options. However, universally, understanding and expressing familiar concepts like body parts is most typical at this age.
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