Question

write some as well.
all these years later, after making more than twenty books of my own, i still feel the miraculous power in language, whether written or spoken, the same power i felt when i sang a train into motion and i learned the name of snake and sandra taught me the alphabet on the screened porch of our farmhouse in memphis. how extraordinary, that a few sounds or a few squiggles can rouse up people and voices and landscapes in our minds! like sunshine, like the urgency of spring, like bread, language is so familiar that we easily forget what an amazing gift it is.
the author uses similes at the end of paragraph 3 to highlight

the various ways that language affects people.
how childrens books affected the author.
that common things can be taken for granted.
the impact of childhood memories on learning.

Explanation:

The author uses similes (like sunshine, like the urgency of spring, like bread) to show that language is so common (familiar) that people take it for granted. The other options are incorrect. The text is not mainly about how language affects people in various ways (the focus is on its common - taken - for - granted nature), not about children's books affecting the author (the author's experience is a lead - in), and not about childhood memories' impact on learning (the main subject is language).

Answer:

that common things can be taken for granted.