Final answer:
The sentence from the passage that best shapes the theme is one that highlights a child's growing awareness of the world and language development.
Step-by-step explanation:
The sentence from the passage that best shapes the theme is: 'The passage gives me the impression of an attempt to replicate a child's growing awareness of his world, the relationships between those who populate it, and the development of his facility for language.'
This sentence best shapes the theme because it highlights the overall purpose of the passage, which is to describe the child's perception of the world and his language development. The theme of the passage is the exploration of a child's experiences and the development of his understanding of the world around him.
By using descriptive language and mentioning the child's awareness of relationships and language development, the sentence effectively captures the main idea of the passage and shapes the theme of the text as a whole.