Final answer:
The teacher is applying context clues that require inferencing based on the given details surrounding an unknown word to deduce its meaning, which is Option D.
Step-by-step explanation:
The teacher's instructional strategy helps students develop word knowledge by figuring out the meaning of an unknown word using the context clues in the sentence. In the provided scenario, the correct type of context clue used is Unlocking a word's meaning that is not directly described but needs to be inferred based on information given by an author.
This approach relies on the details surrounding the unknown word, such as the fact that the word describes an animal with a red pelt, to help deduce its meaning.
This method of inferencing is different from defining a word directly, restating its meaning, or using signal words that show contrast.