Six-year-old trey read the sentence, "the cow is in the pen." he then picked up a blue pen (writing instrument) on his desk and asked his teacher, "how did the cow get in the pen? " this example shows that trey did not understand that words:

Trey didn’t understand that some words can have the same spelling and pronunciation but have completely different meanings. The definition completely depends on the context. Some examples of this include draw and spell. While one pen is a type of enclosure, the other is a writing tool.

The answer for this question is c